Brain Gear Assembly

by phaux, published

Brain Gear Assembly by phaux Jan 12, 2010
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Brain Gear Assembly by phaux is licensed under the GNU - GPL license.

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This was heavily inspired by the other brain gear shared here on Thingiverse. The other brain gears I've seen are printed all-at-once by a printer with soluable support material or such. I redesigned everything from the ground up such that it can be printed on my (hopefully coming soon) Makerbot. Assembly might not be possible and I'm thinking there will probably be some breakage.

I'll try to update and get rid of some of the bugs when I get my printer in.


You'll need to print 12 of the BG-1, 4 of the BG-2, 1 of the BG-3, and 1 of the BG-4-A (Assembly of the 12 necessary sleeves).

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An update: the bearings that slip into the gears print with a hole too small to fit the frame pieces. The frame arms that hold the gears appear to be 0.24" diameter, but the bearing parts come out with holes about 0.22". I'm using Slic3r.

What was the bearing hole diameter designed to be?

I'm printing this. Gears and other parts are doing OK, but the baseplate came out warped across one direction (the orthogonal direction is flat). This is the surface sitting on the bed. I'm running a bed temperature of 110 deg C. is that too hot?

It works in Pro/Engineer when I designed it. That being said, I added a little bit of gapping in the meshing of the teeth because from FDM'd parts I've had printed professionally in the past, they don't necessarily hold tight tolerances. Also, I have nearly convinced myself it isn't possible to assemble completely and you might need some room to push the gears around to get the final BG-2 to fit and hold everything together.

I like this a lot! I think it'll print okay -- I'll give it a shot soon on my MakerBot Cupcake. Is there any particular part you want printed first?

Wow! You're brave! It's a LOT of time and material to get one of these fully printed and assembled. I don't even really know where to start, but you might try doing all the parts except the gears and try to assemble to frame. If the frame assembles, I'm sure the gears will manage fairly well.