Simple Machines - Cage Gear

by ZombieCat, published

Simple Machines - Cage Gear by ZombieCat Oct 8, 2012


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12496Views 2463Downloads Found in Engineering


The cage gear was used extensively throughout Da Vinci's drawings and this is a good hands-on model for students to interact with, and understand how it works. Be sure to make sure students realize that the cage gear is the driver and discuss with them why they might think this is the case.


This is designed to be cut out of 5mm plywood with 3/8 dowel as the primary axle and the cage gear should use 3/16" dowels.

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Do you think it would be good in PLA? Thanks!

You did that microscope recently, too. Wow. I'm getting a laser next month, so this is really exciting to see. Thanks so much for posting this; it's really instructive!

Nice looking gear!

My attempt failed due to the little scale and having no clue about gears in the first place; http://www.thingiverse.com/thing:18286http://www.thingiverse.com/thi...
Is there a cage-gear-calculator  or a guide on them you could recommend?
Perhaps I'll try and se how small I could print it using your design :-)

DailyEarring#109: Woolwinder (with gears, video inside)
by Schorhr

The only rule of thumb is that the spacing between the holes should match between the cage and the post gears.  Otherwise you just have to pencil it out the old fashioned way... if someone knows of a program that has it built in, please let me know.

Thanks for the reply :-) Too bad, I thought there was a tool readily available.
Only thing I found so far is http://manual.kisssoft.ag/German/8509.htmhttp://manual.kisssoft.ag/Germ...
My design was just on-screen eyeballing and trial&error...