Picture of 3D Printed Wheel (Press Fit) for Jameco Motor
I love using the Jameco gear motors for various projects, but have always had challenges connecting the shaft to whatever I was making.  Using a 3d printer (MakerBot Replicator) and TinkerCad software, I have come up with a press fit wheel that pushes on to the Jameco motor shaft. In this instructable, I'll show you how I designed the wheel.

The print file is at Thingiverse.com:

The design file is at:

Step 1:

Picture of
Notice the flat spot inside the hole--that's what makes this wheel fit well.
MikeTheMaker (author) 1 year ago

I would start by trying 3 mm. Accuracy of the printer, resolution used and the material "smushed" on the first layer of the print will influence the results on a small hole.

jjw6151 year ago

Hi, do you have any suggestions for what measurements I should use to create a good press-fit. I have a motor with a 0.117" diameter shaft. In that case, do you have a recommendation for what diameter I should make the inner hole on the wheel?

where did you get the 3d printer from? im wanting to buy one (like reprap?) that has the full kit. cant find any...
MikeTheMaker (author)  dragon maker2 years ago
I ordered mine from MakerBot--you can get one in a week or so from them. The Replicators are made in the USA and their customer service and community help are outstanding!

I don't have first hand knowledge of any others, but I know the Solidoodle is less expensive (long lead time) and I can't speak to customer support. If you happen to live in NYC, they are looking for interns and include a printer as part of the compensation.
iceng3 years ago
CONGRATULATIONS right back at you :-)

You got Featured and Front Page too.

You have to consider the elastic properties when making
an interference fit on / in the oblong hole very tricky stuff !