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Tuesday, April 13th, 2010 03:39 am
Last week I finally got around to trying out the laser cutter at Metrix. It was so easy. Walked in with a USB drive with a SVG file I made in Inkscape, 6 minutes and $15 later I had the following:



(8, 10, 12, 15, 20, 40 and 60 teeth.)

Let me emphasize what a phenomenal price $15 is for 7 gears. This is a fabrication technique that deserves some serious study. As such, I'm working on adapting the design for a mechanical clock. I should be able to get everything made this way except the weight and some random pieces of hardware laser cut.
Tuesday, April 13th, 2010 12:34 pm (UTC)
Sa-weet! CNC laser cutting is one of the best machining processes to come along in quite a while.

Finding a place that will do metal gears that cheap makes me concede that metal, rather than cardboard, for your digital sundial may be the way to go.
Tuesday, April 13th, 2010 12:38 pm (UTC)
Or are those plywood gears?
Tuesday, April 13th, 2010 05:24 pm (UTC)
Looks like plywood to me. Laser-cut wood has some lovely distinctive dark edges, as if they'd been lightly singed (which in fact they have).
Tuesday, April 13th, 2010 09:27 pm (UTC)
Plywood, yeah. They will only cut wood and acrylic there.