Monday, March 29, 2010

How to start Where are Your Keys?

One thing I've always struggled with, since I first started learning Where are Your Keys (WAYK) was how to start learning WAYK!

Before watching the first WAYK video, I had heard discussion and description of the game, but still didn't get it. A short time later I felt like I understood the game, but didn't know how to explain it in a way that actually made sense. Conclusion:
The only way to understand WAYK is to play it.
That implies:
Explaining WAYK ahead of time is a decelerator.
The thing to do is get playing as quickly as possible.

Another thing that I struggled with at the very beginning was the question "what am I supposed to be doing here?" Should I be trying to memorize signs? Is getting the answer to "what's that?" right important? It certainly was in my high school German class. I found myself trying hard to remember the sign for "black pen" and sign it quickly enough to keep up with the video. This is also a decelerator.

Better to just play along, and let it go how it goes. I suspect that complete newbie players need to get this message early on - that just playing along is fine, don't worry about trying to learn.  I don't have enough experience with this to be sure, though.

Another thought came to me from listening to a recent WAYK debrief podcast. (I think it was this one.) Justin said that he doesn't do 2 colored pens with first-time players, because it's simpler for them to get just "pen" instead of dealing with colors. This is spot on. I think that it's particularly important to get the newbies immersed in the game as quickly as possible - really playing, not thinking hard - so they can understand how to play faster. In fact, for the very first few rounds, I would limit to just 3 objects instead of 5 (maybe even 2!). It's Technique: Bite-Sized Pieces with a very small piece for someone who is just trying to figure out eating for the first time.

On a similar note, I think that explaining Travels With Charlie is interesting, but until you've played the very round, I think it's a decelerator. Just get playing as soon as you can.

Jay's techniques for total newbies:


I've been imagining the situation where a stranger and I both miss the bus. We have some time to kill until the next one comes, and I ask if they want to learn sign language while we wait.


1. Give the shortest intro possible (Technique: Short Intro)

If you'd like, I can teach you a little sign language. We're going to have a very simple conversation about these objects. I'll start, and you join in as soon as you are read.
It may also help to add:
Don't worry about trying to learn something and get it right. Just play along. If you're not sure what to do, just copy me.
2. Play simply (Technique: Simple Set-Up)

Use 2 or 3 objects, instead of the regular 5. Pick objects with simple names (a rock is better than a 1 dollar bill). Don't use two similar objects that require differentiating (only 1 pen).

3. Start playing alone (Technique: Play Solo)

Explain the sign for "What's that?" in English. Then ask and answer "What's that?" for each of your objects in turn. If your newbie doesn't copy, remind them to.

After a few rounds they will be comfortable enough that you could have them start asking you.

Now your players are not complete newbies. You can add a couple more objects in perhaps including color. You can have conversations about how the game works, what to do, where we are going, Techniques, etc.


Adaptation when you have a non-newbie

If you have two or more players, where one is a total newbie and one is not, you can play with the more experienced player instead of playing by yourself. That will probably work a little better.

These are just my ideas, I haven't had much chance to test them on folks. I'm sure I'll learn more as I do.

Friday, March 26, 2010

WAYK Arabic - Travel's with Charlie

When using Where are Your Keys? to learn a language, we use Technique: Travel's with Charlie to describe different levels of language skill, based on the ACTFL scale.

Here is my translation of this scale for Palestinian Arabic:

Level 1 - Tabouli Babaghanoujh Hummos.
Level 2 - How to make hummos.
Level 3 - Explain why olive oil is so good for you.
Level 4 - Negotiate peace if the Middle East.

To put it another way:

Level 1 - Eat Arabic food
Level 2 - Make Arabic food
Level 3 - Why Arabic food
Level 4 - Get everyone to eat Arabic food

Great hummos

Whenever I go to a potluck I bring hummos. I follow my Tata's recipe, which I've been eating since I was a baby. We eat it with every meal. It's a comfort food for me, so whatever is leftover after the party is something I will enjoy.

Traditionally they would use a mortar and pestle to grind the beans, but today we all use a food processor. They probably made fresh hummos every day. One day I hope to try the old way. In the food processor, I make a double recipe.

- can of chick peas (aka garbanzo beans), drained
- clove of garlic, peeled.
- fresh parsley
- 1/3 C raw tahini
- 1-2 lemons, juiced
- 1/2 t salt
- olive oil

Pull the leaves off the parsley, as the stems don't taste good. Put them in the food processor, with the garlic. Process until the garlic is diced.

Add chick peas. Process until somewhat smooth.

Add tahini, lemon juice, and salt. Process another minute. These ingredients should be adjusted to taste.

Put in a bowl, smooth the surface, and cover with a thin layer of olive oil.

To eat, tear a small piece of pita bread, bend it in to a scoop, and use it to pick up some hummos. Pop it in to your mouth, and announce Sahtein.

Thursday, March 25, 2010

Got a cold?

A friend was feeling down about how often her young child has been sick recently. I wrote some thoughts on it to her, and now I'm posting them here.

I hope they get you thinking.
Conventional thinking is "colds are an enemy and must be stopped!" They're the problem. We combat them with antibiotic drugs, hand washing, coughing in to our elbows, etc.

A common progressive view is that it's really good practice for her immune system. The cold challenges you and you get better at fighting off future colds. "What doesn't kill you only makes you stronger." They're a necessary evil.

Another common progressive view is that you only get sick when you haven't been taking care of yourself. If you just get enough rest, good nutrition, avoid sugar, avoid stress, etc., your body will be strong enough to fight off a cold. If you get sick, it's because you're weak. They're a symptom. (Or a punishment, if you're in to that sort of thinking.)

Consider the possibility that being sick is beneficial right now. That the body invites the sickness in to do something important. Something it can't do itself. Suppose you're tired but don't let yourself sleep. So, you get sick. Then you sleep. See? It worked!

Or you need to be coddled and cared for a little extra. You get sick. People around you give you a little extra care. See, it worked again!

Or you have some toxins in your body that you can't clear for some reason. But chest cold triggers a lot of mucus in your lungs, which your body fills with toxins and then coughs out. Tada, it worked! Thank you cold!

I don't mean that you should try to get sick by eating badly, increasing your stress, or avoiding sleep. Do take good care of yourself; it feels good to do so! But when the sickness does come, give it a chance to work. Maybe it's doing something really good for you. Rest, eat chicken soup, and let people take care of you.

Mainstream: Colds are the problem.
Naturopath: Colds are a symptom.
My radical view: Colds are a cure.

Saturday, March 13, 2010

WAYK Arabic 3 - Want Have Give Take

This time, we actually play a couple rounds, and talk about Want/Have/Give/Take.

You can play along a little here, but really you gotta lead your own game. See http://www.whereareyourkeys.org for more.

WAYK Arabic 2 - CraigsList Mine/Yours

As a followup to my initial What's That? video, I present a "Craigs List" of Mine / Yours / etc.

As before, this video is meant to plug in to a Where are your Keys game that you run, not to lead you in a game.  See http://www.whereareyourkeys.org to learn more.



Arabic words are often modified based on the gender of the person you're talking about. So, for example, "your"  is different for a boy or a girl. I don't know a good way to represent this in ASL. Ideally we'd develop some pidgin sign technique for this aspect of Arabic, which would apply through WAYK Arabic.

Wednesday, February 03, 2010

Budget

The feasibility study is pretty much done. The only real outstanding question I have is whether the county will allow us to build the kind of house we want. I won't be able to get a solid answer until I actually apply for a building permit, but I'm hoping to get a hint now, before we actually pay for the land. I do know that there are straw-bale houses in the area, as well as an underground / fully bermed / living roof house, so that establishes a precedent for alternative construction.

With the time available before closing, I'm going to try to draw up a budget. There will be a lot of hand-waving, but it'd be good to get the sticker shock out of the way. If it's outrageous, we can still walk away.

Here's some numbers I have to compare to:

Tom Elpel built his first house in the early 90s, using foraged rocks, trees from a forest fire, and his own labor for $10/sq. ft.

Over the last 5 years he built another house, using many reclaimed materials and his own & volunteer labor for $15/sq. ft.  He was very ... resourceful.

I talked to a log-house builder in the next county. He said they build the house at his facility, then disassemble, ship, and reassemble. (When I was visiting, a guy was using a drawknife, which is awesome.) He said that a log house shell is typically $30/sq. ft., while a finished ("turnkey") house would be $150/sq. ft.

There are a couple companies that do upscale, compact, eco-friendly manufactured homes.  One of them is Greenpod (http://www.greenpoddevelopment.com/pods.php). Another is ideasbox (http://www.ideabox.us/). They both work from a single-wide design, and will add on modules for a little extra room. They're low-energy / clean air / sustainable materials, so we thought about using one instead of building our own. Two problems: they're too small for a family of 5, even if we like each other a lot, and they're expensive. ideasbox fortino is $150k for $1250 sq ft. (that's $120 / sq. ft.).  Greenpods:
Pods start at less than $160.00 per square foot. This includes module fabrication, but not the cost of your land, site preparation, transportation and setting of Pod, or site improvements.
That's a lot of additional costs. Our water hookup fees (not actually running the water pipe) will be $9000, for example.

There's something troubling about theses prices. For one thing, a $150,000 is inherently not "green". If you're planning on buying one, where are you going to get $150,000? Talk to any eco-nut, and they'll tell you there's not much money to be made doing sustainable work. All that money's gotta come from somewhere. We are quickly converting all natural capital in to money, and that's tough on the ecosystem. Similarly, the money you spend on the house will be used to direct more of the same behavior. The economy is inherently eco-unfriendly. Just look at how much waste we create here in the most affluent country in the world. The poor parts of the world that are making a lot of waste are doing it in a desperate attempt to copy us!

This is why the "eco-mansion" feels so wrong to me. That kind of luxury is always wasteful.

That doesn't mean that we have to be miserable to "save the planet". Quite the contrary! The eco-mansion is a substitute for our true desires; when we meet those true desires we find the most fulfillment possible.

What a delicious tangent.

Anyway, there are some points to measure against. It's spreadsheet time.

Tuesday, January 26, 2010

Good network printer/scanner wanted

I have a Lexmark X4550 printer/scanner/copier. I love that I can scan stuff and that it's wifi, and that it's pretty fast, but I hate so much else about it. I have been in the market for a better unit since the day I got it, but can't seem to find just the right thing.

It requires you to install a bunch of software on your computer. It's clearly not very good software, and I worry about what havoc it could be causing. It's a slow install, too. Also, there are 6 different versions, by OS. So for each computer I have to download again. And because it's big, the download is far from instant.

To scan over Wi-Fi, it goes like this:
  1. load the document
  2. switch to scan mode
  3. browse a list of destination computers, and pick one
  4. wait while it queries the computer for "applications"
    • This sometimes fails after a minute
    • These are things like "File, Email, Web Browser, and Computer"
    • "File" brings up a custom Save As dialog on the target computer. You can't hit ENTER, you have to actually click Save. If you scan again before saving, the first scan is lost.
    • "Computer" means to launch Lexmark's crappy scan touch-up software
  5. select an application (I always use File)
  6. click Scan Color or Scan Black 
  7. wait while it scans
  8. on the target computer, save the file
It has a USB port, so I can carry a laptop to it and plug in directly. This installs a second instance of the printer, which I don't really want, since I'm just trying to scan. When you do that with Windows Vista or 7, you can't use the Scan buttons any more. Instead you have to launch Windows Fax and Scan an use that interface. It's a fine interface, but it's at the computer, and scanning should happen at the scanner.

I have one pre-Vista machine, my Windows Home Server (which is based on Windows Server 2003). If I plug in to USB there, the Scan buttons follow the same sequence as Wi-Fi.

I don't scan that often, so I tolerate it, but every time I use it I am annoyed.

The print functionality is OK. The installed software insists on speaking "Printing Started" over the speakers. It sometimes fails to print with no obvious reason. Every print job asks me if I want to register, even if I check the "don't remind me again" option. It does paper jam more often than I expect, but maybe that's a hard problem.

The print & scan quality are good enough that I have no complaint.  And at my low usage level, the speed is fine.

What I really want

Small. I want something unobtrusive.

Internal paper trays. Less likely to get peanut butter on the paper.

1-touch scanning.  Load the document, click scan, and be done. The file should appear on a network share on my server ("\\SERVER\Scanned Documents").

Easy setup. On a new computer, do Add Printer -> Add network printer, and it finds it and downloads the driver from Windows Update.

Wi-Fi. I want to print from any computer in the house. But this isn't a requirement, because I could plug it in to the server and share it out there.

All-in-one isn't a requirement. I would accept a separate printer and scanner, if that's what it took. I'd even plug the scanner in to the server if that's what it took to get one-touch scanning. If they were separate units, I'd probably get a color laser from Dell Outlet, as they're not too expensive. The long-term costs are lower, as the toner doesn't age like inkjets, and I don't print much.

I've tried googling for printers, but it doesn't work. "network scanner" turns up packet sniffers. "scan to share" turns up anti-virus software.

Thursday, January 21, 2010

Truck

Last fall a friend was moving from Port Townsend to Bainbridge, after her husband got a job in Seattle. They had just sold their second car, when they realized they needed a second car for a few weeks, until the move was done.


She decided to buy a really cheap truck and then sell it again 3 weeks later.


The next day she gave me a ride and asked if I needed a truck. I figured it would be useful for the house-building, so I said yes. I ended up buying the truck from the original seller, and loaning it to her for the 3 weeks, which simplified paperwork.


I paid $1000 for a 1975 Ford F-350 Ranger XLT (it's 35 years old). Gasoline engine, automatic transmission. A hundred things broken, but the chassis and engine may still be functional in another 35 years. 


It's an extended cab, which means I can carry the whole family. Between the very low gas mileage and the limited safety features, I avoid doing that. There are no shoulder belts, let alone airbags. The best thing I can say about it safety-wise is that it's heavy.


I bought a service manual right away. Here are things I know to be broken:

  • The rear window slides are full of moss
  • The rear sliding window panes are supposed to have aluminum borders, but they fell off
  • Turn signals / wipers / fuel gauge / heater fan sometimes don't turn on. Turning the ignition off and back on usually brings them back. I am guessing a bad relay.
  • Engine temperature gauge never moves.
  • One running light needs a new bulb
  • There's a socket under the hood for a lamp to light the engine; needs bulb
  • Driver's seat sometimes leans back by itself
  • Middle rear seat belt is broken.
  • Water leaks in somewhere, so the floor is usually wet.
  • Tailgate latch is broken on one side; pliers required to open.
  • Tailgate is warped, making it very hard to close.
  • Rear bumper is broken off the chassis on one side. Other side is strong enough to hold it on.
  • Lots of bare wires under the hood; what did they go to?
There are two gas tanks. I have replaced both gas caps. One was nearly impossible to open, because they key was cut wrong. I finally got the hang of it, but decided to stick with non-locking caps. The other one had a worn-out gasket, and I figured for safety and shelf-life a new cap was a good idea. 

Reid hates it. He doesn't like the smell. He sees how much is broken, and tells me I wasted my money. But it's a 1-ton truck, so it can carry a lot.

Wednesday, January 20, 2010

New blog for the house

I've created a new blog just to write about the house-building experience. The URL is http://jbazuzihouse.blogspot.com/.

Tuesday, January 05, 2010

WAYK Arabic 1 - What's That?

I've been learning to play Where are your Keys since the first video appeared 4 months ago.

I spent the end of December visiting family, including my Arabic grandmother. She always wanted me to learn Arabic, and was disappointed that I hadn't done so. Now, at age 35, I was finally ready.

To use this video (and those that will follow), you'll first need to learn Where are your Keys. Do that at http://www.whereareyourkeys.org. Practice until you can are fluent in What's That? before you try to learn from my video. Also, my videos don't show full games, but instead the snippets necessary to get you started playing the game. You'll have to make the leap yourself.




I spent about a week learning the basic words and practicing with those that could help me. Arabic is a complex language, and I needed to figure out what parts to use with WAYK. Their impulse, of course, was to teach me the name of every object we came in contact with, and I had to resist that gently.

My elders were born in Jerusalem, and came to the United States in the 1970s to escape the violence. Their dialect is geographical; Arabs from other places speak differently. They were very poor, so they probably spoke differently than other classes. They are Christian, and that may affect their dialect as well.

My goal here isn't to be able to speak with Arabs I might meet; it's to get closer to my family. So, it was important to learn the exactly dialect of my grandmother. If you want to learn Arabic for a different purpose, you will need to find a different "Fluent Fool" to help you out.

Saturday, December 19, 2009

Some books

Some great books:

The brown book at the bottom left was written by my grandfather. The one at the top left is Joy of Sex.




Friday, December 18, 2009

"My influences include"

There are a few people who have influenced in the last decade, and I was just thinking about who they are, how I found them, and how they are connected.

While visiting my in-laws we were served home-made kefir and raw milk. I was definitely hesitant at first, but we didn't get sick. My mother-in-law (MIL) also showed us Nourishing Traditions (NT). We read & discussed the whole visit, and came away with a bunch of new ideas.

The MIL bought us our own copy of NT, as well as a copy of Wild Fermentation by Sandor Ellix Katz, aka Sandorkraut. This book blew my mind. It's not just a recipe book. It continued to change my thinking about micro-organisms and about industrial vs. home-made food. It also got me thinking about issues beyond food: death, compost, and social change. When he wrote a second book, The Revolution will not be Microwaved, I bought it and read it immediately. Both of Sandor's books have a safe home on my small bookshelf.

While trying to learn more about Ginger Soda, I came across an article called The Economics of Fermentation by Charles Eisenstein. Something about this guy's writing spoke to me. It was wonderful to read, and made complete sense to my way of thinking. I looked for more, and found his book The Yoga of Eating. It blew my mind. For the first time I understood Yoga Breathing. I now read everything he writes (book, blog, audio, video).

Sandor Katz came to Seattle to give a workshop in the summer 2006. My twins were just 5 months old, but I went anyway, exhausted but enthusiastic. He was teaching Wild Fermentation, while Frank Cook was teaching Wild Foods. I had never thought of eating wild, and Frank was way over my head, but he sure got me thinking. He recommended a book called Botany in a Day by Tom Elpel. Tom had self-published 4 books, and offered them all together at a discount, so I went for it. The others are Direct Pointing to Real Wealth (which fell flat with me, but maybe it's time to re-read), Participating in Nature (which got me thinking about primitive living skills; now I go in to the woods almost every week), and Living Homes. Now I'm working on plans to build a new house for my family. While I won't be building in quite the same way as Elpel, his thinking about the how & why of homes has shaped me greatly. More recently I read Rob Roy on Cordwood & other topics, and realize that I match Rob's outlook on life more closely than Tom's.

There's another thread, and I can't remember all the details. Even though I love learning, I deeply disliked going to school. So much about it seemed wrong. I heard claims that I was supposed to be learning math, science, literature, etc., but actually was learning very little of those things for the time I was there. It was such a cruel place at the same time. I decided early on to homeschool.

As a young adult I discovered Lies my Teacher Told me by James Loewen, although I can't remember how. At the same time I read A People's History of the United States by Howard Zinn and some of the work of John Taylor Gatto and John Holt. They got me thinking about how school works, and why. Eisenstein talks about it, too: school is perfectly suited to preparing you for an adulthood spent doing work you don't care about.

As a parent of a spirited child, I was grateful to discover Nonviolent Communication by Marshall Rosenberg. More recently I've watched some of his videos on Youtube and it has moved me deeply. Both Rosenberg and Eisenstein explore the way that our language is structured to a society of good vs. evil, the separate self, control of nature and human nature, etc. The roots of these values go very deep indeed.

Any reading on homeschooling quickly leads you to Unschooling. I have been a parent for 8 years, and I still haven't figured out how to be an unschooling parent. I used to think it was because my son was so spirited, but now I think it's because I wasn't ready for it: I still had work to do on myself.

My step-brother turned me on to a podcast by Willem Larsen called The Learning Revolution. The podcast immediately preceding was both exciting and confusing. It was an interview with Evan Gardner, about his method for learning languages quickly, called "Where are your Keys?". WAYK is an amazing way to learn languages, but also shows us different ways to think about learning. Ways that don't fit the conventional model of education, with its hierarchies, systems of control, and misery.

All of these things are connected.

The world is in crisis: global warming, coral reef death, peak oil, H1N1, the heart disease epidemic, rising asthma and Asbergers rates, obesity, economic collapse, the war on drugs, the police state, the prison industry, the growing gap between rich and poor. There are many more for this list, and they are all the same problem at root.

Similarly, these work of the people mentioned above is part of the solution. The coming turning of the age. From fermentation to unschooling to home-made houses, these people are seeding the ideas that will help us remember a new way of being, if that makes any sense. Living in the gift, believing in the more beautiful world that our hearts tell us is possible, recognizing that you and I are not separate, but instead expressions of the same universe.

I hope you will read the works of these folks and let them move you, and become a mover yourself.

Build a house

We've been looking for a house to buy, and haven't quite made it. We got close - an offer on one that didn't stick, and another that was already pending when we found it - but for now we're still looking.

Eventually I decided to revisit what I had learned about alternative house construction. Materials with low embodied energy, reclaimed materials, build-it-yourself, insulation, thermal mass, solar gain, and integrated design.

That last one is important. Integrated design. By that I mean thinking about how each part of a house design relates to the rest. For example, laying out the floor plan so the plumbing can all be together ("wet wall").

In Permaculture (and in nature) every element serves multiple roles. Chickens don't just produce eggs; they also consume food scraps, protect the orchard from pests, turn soil in the garden, and produce fertilizer. In conventional house construction, we use studded walls, meeting the needs like this:

strength - studs, OSB sheathing
fire resistance - drywall
insulation - fiberglass batts
beauty - drywall, siding, paint
thermal mass - none

Contrast that to Cordwood, my current DIY favorite.

strength - cordwood
fire resistance - cordwood
insulation - conrdwood
beauty - cordwood
thermal mass - cordwood

Furthermore, Cordwood is cheap and accessible for the amateur. No fiberglass to make you itch, either.

In addition to building our own house, we'd like to grow much of our own food. Chickens, ducks, goats, honey bees, a small orchard, and a big garden. Maybe pigs. You don't need a whole lot of space to do that, but I don't want to be buying a lot of food for the animals: I want them to roam and forage for themselves a lot. That means having a little land. I don't need to produce enough food to sell, but I do hope to produce more than we need and trade or gift the surplus.

Then again, I don't want some sort of rural McMansion. A hundred acres I can call "mine". 3000 sq. ft. of house at $120 / sq. ft., with active solar heat management and laminated "green" floors. Driving 20 miles just to see friends or by shampoo.

We've found 1.7 acres for a reasonable price. That's more than enough to grow all the food we can eat, but not enough to feed all the animals we could want. That's OK.

It's outside the city limits, which gives us more leeway with codes & construction methods. However, it's right over the line, so we're close to stuff, including a bus line. It also has city water in the street.

It's wooded. I have reservations about clearing land. But the alternative is to buy land that someone else has already cleared, which isn't much better. However, land that has been abused (e.g. gravel pit) and is super-cheap would be an opportunity to bring rich life back, which I like. Anyway, I love the woods so being wooded isn't terrible. And having a supply of wood for building and fuel is good, too.

In the new year we plan to put an offer on the land. Then we'll build an outhouse to explore the building techniques we're thinking about. Then a temporary shelter. We have a year on our current lease to get all that done and then start building.

I also hope to inspire others with my example, and by teaching what I learn. You don't have to have an enormous, expensive, toxic, wasteful home. It can be modest and comfortable and beautiful and cheap and healthy.

More to come, I hope.

Thursday, November 12, 2009

Solar house design

I've been thinking about building a house. Ideally it will be cheap, modest, super energy efficient, comfortable, beautiful, and low maintenance.

My friend Andy loaned me a book called The Passive Solar House, by James Kachadorian. There are a bunch of worksheets in the back, and I turned them in a Google Spreadsheet. (I accidentally drank caffeinated tea in the evening, so I'm up late.)

Then I plugged in data for my family and my house, and found a lot of bugs. Fixed the bugs, then fixed some more, and found some interesting data.

Summary

I can stay comfy in winter for ~1 cord of wood per year. That's dry, seasoned hardwood in a woodstove. A masonry stove will be more efficient with that wood.

This area doesn't get that cold (good) but doesn't supply much solar energy (bad). Having lots of big windows helps, but not enormously.

Most of the heat loss is through windows (especially at night) or from replacing air.

Details

The house design I'm using is built in to a hillside. The north side is fully bermed. The east and west sides are bermed part-way, but leave space for some egress windows and a doorway.

The south side is mostly windows. Just how much is a variable I'm playing with. Some web sites recommend floor-to-ceiling windows, which is expensive, but creates an in-home greenhouse, which can be very beautiful.

The book points out that windows may allow a lot of solar gain in the summer, but then lose a lot at night. In many climates, it's a wash: adding windows only increases temperature fluctuation. Then you need to add thermal mass to compensate. Glass insulation ranges from R-1 to R-3, which isn't much.

The design is 48' x 32', for 1500 sq. ft. That's more than we really need, but if I'm going to build a house in the ground, I figure I should design a little extra room. Size can matter a lot, so I will ponder these numbers carefully.

In my calculations I'm ignoring 2 areas of thermal mass. The design includes large planters in the greenhouse area. The moist soil can hold a lot of heat. The walls may be built out of concrete block, filled with dirt or concrete, which will add a lot more thermal mass. I haven't accounted for either of these factors, but I should.

I'm calculating wall and ceiling insulation at code requirements, approx R-20 and R-30 respectively. Glass is double-paned, which is R-2 (ouch!). Both can be improved, for greater cost.

The book recommends replacing 2/3rds of the interior air every hour, to keep it healthy and fresh. I don't know hot that compares to conventional homes, but it seems like a lot.

The calculations assume 72 degF as the ideal internal temperature. I'd be happy with 68, but I can't figure out how to work that in yet, but I will.


Sunday, August 30, 2009

What is "Where are your Keys"?

I heard of Where are Your Keys a while back, and it seemed cool, but couldn't understand what it was from the limited materials available at the time. Now we're starting to see some more material, especially video, and it's making more sense to me. I think it's awesome.

I want to write down what I think it is, both to clarify my thoughts and maybe to explain it to others.

Where are Your Keys ("WAYK") is...

...a way to transfer a language from one person to another. It does this very quickly, and in an easy, relaxed way, in contrast with the miserable experience of the classroom.

...a way to transfer language fluency instead of language knowledge. Conventional language learning often begins with rote memorization of vocabulary. Memorizing a large vocabulary will not make you sound like a native speaker; children who are just learning to speak have a small vocabulary but still speak with a comfort and natural ease that is out of reach of students in conventional language classes. By comparison, WAYK builds fluency: the ease and grace of a native speaker.

...a way to teach / learn sign language. Signing has the unique property of working concurrently with speech: you can talk and sign at the same time. Sign is a fundamental part of WAYK.

...a way to teach WAYK. When you play WAYK you are taught the techniques that are being used in the game. You walk away knowing how to play WAYK with others. You can then use it to further disseminate the language skills you have just learned. This is especially important for endangered languages, of course.

...a tool for student or teacher. As a student in WAYK, you aren't being "filled with knowledge" by a teacher; you become your own teacher, and are responsible for your own learning. Hence, a teacher of a language can use WAYK with a group of students, but a student can also use WAYK to learn from a reluctant native speaker. The latter is great for "rescuing" endangered languages of indigenous peoples.

...modular. WAYK is composed of many small techniques, which can be applied one at a time. Each has a memorable name. The first technique is called "Technique": the use of small, individual techniques with memorable names. The first WAYK video is about this very topic:


...open source. Anyone can create new techniques. As WAYK spreads, the collection of techniques grows quickly.

...light on materials. You don't need textbooks or a classroom or a chalk board. They seem to start with 5 objects (red pen, black pen, white rock, dollar bill, and stick) and a table to sit around.

Up until now, Where are your Keys has been spread in person, playing the game face-to-face. This has created a geographic restriction on dissemination of the game. Now the people behind WAYK are working on internet videos to teach the game, so people can learn it without traveling to Portland, OR. They just started; you can watch the progress at http://whereareyourkeys.wordpress.com/.


Tuesday, July 07, 2009

New centerboard (part 9) - Pouring in the real centerboard

With the test pouring done, we started making plans for the real thing.

In the test, as the lead cooled, it shrank and pulled away from the sides. To fix that, I wanted to use a smaller hole and slightly overpour, and then use a hammer to smush the middle, driving it towards the edges. Also, I read I should taper the edges of the hole, so the lead would flow around it, making the lead hold on to the shape of the wood. This would also smooth the transition when the lead shrank. In both cases, I needed a smaller hole, so I reduced from 6" square to 5" square for the first cut of the hole, with the plan to cut some more away for the taper.

The 1" spade drill bit provided the corners again. This time I used the jigsaw to cut the sides of the hole, since the circular saw wouldn't fit in the smaller space. I then turned the jigsaw to cut a 45 degree angle, and shaped the edges a bit. I followed with a rasp to take the edges closer to a 30 degree angle.

I didn't want to use screws on the inside edge again, since the lead hadn't flowed around them well. Nails seemed like a better choice. The plans show 3 nails per side, but getting them in without splitting the plywood seemed tricky, so I drove one in to each corner. Because the corners weren't tapered, they seemed stronger and needed help holding the lead in.

Because I wanted to overpour the lead for later pounding, I added a top mold, with a hole cut in the middle. The top mold also means that being perfectly level isn't required. So now the bottom layer is a 10" square; the middle layer is the centerboard with a 5.5" hole cut out, and the top layer is a 10" square with a 4" hole. A 1" pour hole would have been easier to cut (with my 1" spade bit), but harder to aim for. It would also have held in more heat, and I wanted the lead to cool faster so it would burn less wood.

I was told that lead was thin, so make sure everything is clamped tightly in place. I didn't have a clamp deep enough for the inside corner of the molds, so I used a lead-acid battery (in a case to protect from heat) to apply pressure in one corner. I've seen a section of railroad track used for this purpose. I'm not sure where to find one. Clamps did the other parts.


I decided to switch back to the cast iron pan instead of the coffee can. The coffee can didn't have a good pour spout, which was a problem during the test pour. I saw a lot of extra lead left behind in the can, so I used pliers to pull out some, and then melted out the rest. It took a long time to heat the can through the cast iron pan (pictured), so I removed the pan and heated the can directly. At this time I noticed the pan handle was so hot that I couldn't hold it long, even with the gloves. I timed it at ~10 seconds: not enough for a pour. I figured I could use the vise grips on the handle.


Once the extra lead was out of the coffee can, I put the cast iron pan back on, and then put the block of lead in. After 1/2 an hour of burning there wasn't any molten lead. It was breezy, which carried the heat away quickly. The cast iron pan had a lot of surface area and thermal mass, making it harder for the small campstove to do its job. Finally, the large block of lead was only touching the pan base at two small points, because the lead block was too big to fit in the pan. I needed to cut it like before, but now it was very hot.

I attacked it with a drill bit this time, drilling a series of holes in a line on one side, and then the other, and then poked at it until the lead split easily under my pliers. I gathered up all the shavings and put them in the pan, along with the two large blocks of lead. The shavings melted first, and helped transfer heat in to the block, which worked well.


To keep the heat from blowing away, I surrounded the setup with the panels from a plywood play house. When that didn't help enough, I added a piece of ceramic tile (from my "scary sharp" setup) on top of the pan, as a loose lid. Even better would have been heat reflectors, perhaps tile with foil over them.

After another round of waiting, the lead was melted. There was a little dross again, so I started skimming. After 5 minutes of "final" preparation, the lead had started to solidify at the edge of the pan. To work I had removed the plywood panel wind breaks and ceramic tile cover, and the wind was carrying away my heat.

Put them back in place, and waited again. Decided to do the pour quickly, so things would still be hot.

After another 15 minutes or so, the lead was all melted again. I clamped on the vise grips but found that it was too heavy to lift that way and stay under control. I used a second set of pliers to get both hands working together.



After the lead cooled, we removed the top mold, and saw that there was way, way too much lead. I shoulda stopped pouring when it was just ~1/16" up in to the top mold. Instead we had 1/4" or more. I experimented with removing it with a wood chisel and a block plane, but ended up buying a cold chisel to cut it away.

We spent a couple hours with hammer and cold chisel, to remove extra lead. Then we used the hammer to smooth the surface of the lead on the top, which caused it to bulge on the bottom. Hammered the bottom back to shape, then flipped and attacked the top again. After a while we decided it looked good enough. There was a gouge where we dug too deep at one point, and we were able to mostly repair it but not completely. Epoxy will have to fill in the hole.

I'm not certain if the centerboard will sink like it's supposed to. The new hole is considerably smaller than the old one (and the plans), and a substantial amount of lead is left over. However, the new centerboard is made of a denser, heavier wood, so it may be OK. If not, I can drill a few smallish holes and cast in the lead scraps.

Here's the good (bottom) side, in its final form.


Next:
- Clean up the cuts that went off the line
- Draw and cut the curve at the top
- Plane down the leading and trailing edges
- Cut a hole and pour in a lead sink weight (first time pouring lead!)
- Cut a gap for the pivot
- Prepare 1/8" sheet brass as pivot hole reinforcement (in progress)
- Drill 5 holes for fid and lanyard (ooh, the easy part)
- Epoxy and paint
- Install centerboard & lanyard
- Put boat back on trailer

Monday, July 06, 2009

New centerboard (part 8) - Failure becomes success

After failing to melt lead with a propane torch, I went looking for stronger tools.

Many instructions say to use a campstove to melt the lead. You want to be outdoors so the fumes don't collect (where do they go?). I didn't want to buy a new campstove for just one use, so I searched for used ones. There aren't many around. I finally found one at Marine Exchange, a used boating goods store. The salty old guy there suggested I use a weed burner, instead. It would produce a lot more heat, which meant I could melt the lead faster, using much less fuel. It took him 10 minutes of searching to find all the bits I would need: a hose with a regulator, a fuel switch, and fittings to adapt between each. Most of that time was finding the right combination of fittings. $10 for the set.

He also suggested a coffee can as a crucible, and vice grips to pick it up and pour. When I felt how heavy the cast iron pan + 11 lbs of lead was, I decided to get a coffee can. Who buys coffee in a can any more? I think most people buy it in plastic or fresh-ground in paper. It took a while to find one, but eventually I tried freecycle, and someone delivered it to my door. (Thank-you!). I didn't have vice-grips, so I decided to use 2 large pliers.

I borrowed a propane tank from a friend, and enlisted the help of my father-in-law who was visiting.

The block of lead was too big to fit in the mouth of the coffee can. My father-in-law said that a hacksaw would gum up easily with lead, and suggested a different approach. We used a hammer and a prybar, and perforated down the center. Flipped it over and repeated. Then leaned it against a concrete step and wailed with a sledge hammer, at which point the lead bent and we could pull it apart and put it in the coffee can.

We got all the propane hose bits hooked up, with Teflon tape between the fittings, and soap water to look for leaks. There were a lot of parts! Here's the setup, ready to go:



We fired up the weed burner and pointed it in to the can. The breeze blew the flame away from the can, so we made no progress fast. We moved in to the garage, with doors open for ventilation, and tried again. After 10 minutes we saw lead at the top melt, drip down, and freeze at the bottom. It looked like it would take a long time. I was getting tired of standing there holding the weed burner, so we turned it off and looked for a new plan.

Filled the propane tank up, to make sure there'd be plenty of fuel. (6.9 gal for $17). Went to the local general store for a camp stove, and found a basic model for $22. It was listed as 10,000 BTU, although I suspect those numbers are as much marketing as anything else.



I saw that it would screw in to the propane bottle that came with my little torch, but I was worried that there wouldn't be enough fuel for our job, and wanted to use the big tank instead. We looked through the set of fittings they had and picked one that seemed like it would work.

The next day we hooked up the camp stove to the big propane tank, went to light it, and got nothing. No fuel was coming out of the stove. We noticed that the small propane bottle looked like it had a pin on it that could open something on the stove's fitting, and figured we needed something more complex to push it. At the hardware store we found a different fitting that didn't just adapt to the right thread of for the camp stove, but included the little pin that we thought was missing. The hardware store also had a hose with the left-threaded fitting on one end, for a big propane tank, and a "throwaway" fitting on the other end for the camp stove. It was exactly what we needed, but at $42 I passed.

Back home we put the new fitting on, hooked it up, and again got nothing. *sigh*. After further pondering, we figured that there were two regulators involved, and that might be the problem. One built in to the hose, sitting right on the propane tank. The other in the camp stove's tubing. I guessed that they interfered with each other, and that stopped it from working.

We removed the regulator on the hose, and saw that it had different threads on each end. That meant I needed another adapter. I also saw that hose end was left-threaded, and there was a small adapter between it and the regulator.

We loaded all the equipment in to the van and drove back to Marine Exchange to find the right fitting. After 10 minutes we found two fittings that, together, would do the job. Drove back home, reassembled, and got leaks. Lots of leaks. We eventually figured out that one of the new fittings was really meant for plumbing, not for propane, and wouldn't seal well with the other fittings. Also, two of the fittings that should have worked together were leaking a little.

Here's the full collection of fittings:




We went back to the hardware store, and looked for alternative fittings. After 10 minutes of pondering, I decided to spring for the $42 hose that was exactly what I needed, instead of a cobbled-together collection of many parts that kept failing me in different ways. I wanted to get the lead melted already! I also picked up a pair of vice-grips, because having them securely clamped to the can seemed safer.


Put the lead in the coffee can on the stove, and turned it on. After about 1/2 an hour it was all melted. I used a cheap metal spoon from the thrift store to skim off the junk on the top. Poured it in the mold, saw it bubble and settle, and then let it set.


After it cooled I took it apart, and examined the result. The lead had pulled away from the edges all around, up to 1/8". It had not flowed over the tops of the screw heads; they probably cooled the lead quickly and were too high and thick. The bottom was relatively smooth and shiny, while the top was rough. During the bubbling stage, some tiny splashes of lead had left little bits sitting around, which we collected for later use.

New centerboard (part 7) - failed test pour

The centerboard is made of plywood, which is bouyant in water. We want it to stay down, so we have to add some weight. One way to do this is to melt and pour lead in to the board. The original was done that way, and I decided to do it again, reusing the lead.

Casting lead was all new to me, and it took a while to get things together. I decided to do a test pour first, and then repeat in the real centerboard.

To create the test setup, I started with two 10" x 10" pieces of the same plywood as the centerboard is made of. Neither was scrap, I'm afraid. The plans call for a 6" x 6" hole, to hold 10.9 lbs of lead. I drew a 6" square, then measured 1/2" in from each side. A small pilot hole, followed by a 1" spade drill bit in each corner got things started. To avoid tearing up the exit hole, I drilled 1/2-way through all 4 holes, then flipped and drilled the other side to match. Finally, used my small circular saw to cut the edges of the hole. That isn't very safe, as the saw wants to jump when the blade hits the surface. A jigsaw is safer, but straight cuts are harder and my circular saw is a better tool than my jigsaw.

Lead doesn't stick to wood, so I put nails and screws in the inside edge for it to mold around. I used both I wanted to see which would work better.



For a crucible (to hold the lead), I bought a 6" cast iron pan from the thrift store. Everyone recommends a coffee can, but I thought the built-in handle and pour spout would be useful.

I had a propane torch from a yard sale years ago, and decided to give it a go for melting the lead. It's a classic, probably from J. C. Penny. The instructions are amusing. In those days, you didn't need to worry about fumes from melting paint.



Applied the flame to the lead and all that happened was the lead and paint on the surface melted. I used the opportunity to scrape a lot away, but no lead melted. Not enough heat.

Sunday, July 05, 2009

New centerboard (part 6) - pivot plates.

The plans call for a pair of brass plates to reinforce the pivot hook on the centerboard. After popping them out of the old centerboard, I used a mill file to bevel the top edges, to smooth the transition to the wood.

The plans say to use screws to hold the plates in place, but the original didn't have them. Spent some time with the drill to machine some counter-sunk holes. Drilling brass it tricky, but I got the job done eventually. I have an ancient J. C. Penny drill press that didn't help much. I gave it away a few days ago, and will get a good one if I decide I really need one.

Used a mirror-sharp chisel to cut slots to bed the plates in the centerboard. If the plate had been placed on the surface of the plywood, all shear forces would be taken by the screws. The plates are 1/8" thick. The 3/4" plywood is a little thinner than advertised, and cutting it down 1/8" on each side would leave less than 1/2" of wood to take the strain, in an area where strength matters. So I chiseled through 3 plies, which makes them about 1/16" deep. Seems like a good compromise. The plates fit very snugly, which helps make sure they can transfer the shear forces to the wood.

I also decided to use some Gorilla Glue to hold the plates to the board. It is strong stuff, and grows by 4x as it cures, and sticks to just about everything.

I practiced screwing in to scrap plywood and found that it was easy to drive too hard and strip out the wood in the hole. I decided to use my bit and brace ($3 at a used building supplies store!) to do the last turns of the screws. I also experimented with different size pilot holes to see what works the best.

So, the installation procedure was:
  1. Wet both the wood and the metal plates
  2. Dab on a very thin layer of Gorilla Glue
  3. Wait 5 minutes for things to get tacky (gold lamé?)
  4. Install one plate
  5. Drive screws with the drill most of the way in
  6. Use the brace to finish the screws off
  7. Flip and install the other side.
It was at "flip" that we saw a problem: the screws were slightly too long. The screw tips poked through the wood on the other side, which would stop the other plate from fitting properly. Meanwhile, the glue is drying...

I quickly grabbed a Dremel grinder bit (I don't have a Dremel, just a grinder bit, left over from making a lock pick set 12 years ago), tossed it in the drill, and ground down the tips of the screws. They are soft brass, so it went fast. Then I put the other plate in place and clamped it down while the glue cured.

Meanwhile I cut the tips off the other screws so they wouldn't be too long. I used the grinder to shape them to a little point, to help the screw get started. Gorilla Glue reaches 80% strength in a an hour or two. After lunch I unclamped and drove in the remaining screws.

The result worked out OK, although I do see one corner bulging because of a screw that's still too long. Oh, well, it's too late to change and will be OK.
From Jay Bazuzi's personal blog
As you can see, the slots in the brass overhang the wood by about 1/16", so they take the strain first.

Next:
- Clean up the cuts that went off the line
- Draw and cut the curve at the top
- Plane down the leading and trailing edges
- Cut a hole and pour in a lead sink weight (first time pouring lead!)
- Cut a gap for the pivot
- Prepare 1/8" sheet brass as pivot hole reinforcement (in progress)
- Drill 5 holes for fid and lanyard (ooh, the easy part)
- Epoxy and paint
- Install centerboard & lanyard
- Put boat back on trailer
 
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