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I'm testing laser-cut gears for a project I'm working on, and thought some other makers might be able to benefit from the layout I made. This is a series of 13 sets of 4 gears each. Each set contains a gear with 11, 19, 23, and 31 teeth.

I drew them with the Inkscape involute gear renderer using increasing circular pitch from 1px to 13px. For the 11-tooth gear, this corresponds to pitch radii varying from roughly 0.5mm (I don't expect this to work well) to roughly 6.4mm.

The smallest three sets use a 3/4mm hole for an axle; for those playing along at home, this corresponds to a US size 6/0 (UK size 22) knitting needle. The rest of the sets use a 2.5mm hole, corresponding to a US #1 knitting needle. This size doesn't seem to have a UK equivalent (oops!) but I'll be updating the design soon to fix that.

I've started by ordering test gears in 3mm acrylic; I don't have any results yet, but when I do I'll post them over here: http://support.ponoko.com/entries/20522201

Anyone else who orders test gears is encouraged to post their results in the same thread. I'll also post photos as I get test results from new materials.

forty2 would like to share their product with the following license Attribution ShareAlike license Read the fine print of this license
Download free .svg files Add the design files to your My Ponoko account to make them. If the license allows it,
you can also modify the design if you like.
OR... Download free design files Download them to your computer, then upload them to your My Ponoko account to make them.
If the license allows it, you can also modify the design if you like.

Reviews of Test Gears

Additional info: Listed on Sep 04, 2012 Viewed 2138 times Report this item to Ponoko

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