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Sailing Canoe Chapter 7: Sew a Skin over the Hull Skeleton and Seal it.

Step 3Break Sewing Machine

Break Sewing Machine
To get warmed up I fired up the machine and sewed up some rips in my board shorts. I was thinking my machine was pretty good. Then it made bad sounds and plastic gear teeth fell out of it.

Damn.

I've got one thing to say to you. Plastics. SUCK!!!!
For gears anyway. If I were going to invent a field and call it "engineering", I'd teach my students that if you make a nub out of a material ten times weaker, you should make it ten times bigger.
Unfortunately, when they put plastic gears in these machines, they made them the same size as the metal ones. They were 100 times weaker than the metal ones when they were new, but then the plastic started it's molecular oozing process and turned to cheese. We're all fond of saying that plastic never decays. But it does turn into useless oog.

Why oh why did the Singer Nibelungs make their gears out of plastic cheese?
I carried this sewing machine all the way here and it spits teeth after ten minutes?
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Author:TimAnderson
Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of www.zcorp.com, manufacturers of "3D Printer" output devices. His detailed drawings of traditional ...
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