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 02:37 pm (UTC)
I'd never heard of Inkscape or SVG. Educational!
Tuesday, April 13th, 2010 03:55 pm (UTC)
What kind of wood is it? Or will they hold up long as working gears, I guess is more what I'm asking.
Tuesday, April 13th, 2010 04:18 pm (UTC)
This is why I was able to design model rocket kits (http://www.rocketreviews.com/reviews/all/alway_astrobee-1500.shtml) that I'm really proud of (like the one in my userpic). I know a gentleman in Chigago (http://www.balsamachining.com/) who can do this with model rocket tubes as well as wood and cardboard sheets. If I can think it, he can make it.
Tuesday, April 13th, 2010 07:09 pm (UTC)
That is pretty sexy.
Tuesday, April 13th, 2010 09:10 pm (UTC)
For a second seeing the picture in my friends list without having read the text I thought those were gearcakes. Which would also be cool.
Wednesday, April 14th, 2010 12:31 am (UTC)
That's absolutely gorgeous, and wowie what a price.
Wednesday, April 14th, 2010 05:26 pm (UTC)
I've sometimes thought it would be nice to have lego gears in nonstandard diameters. The acrylic would work nicely, just cut an X shaped hole in the center for a shaft.

Does inkscape let you design one tooth and then repeat it however many times around the circle?