I found a motor perfect for my project. The only issue is that its shaft is in metric for 3mm.
https://www.pololu.com/product/3039/specs#note2
Meanwhile, the gears I have are meant to be for 1/8 inch shafts.
http://www.mcmaster.com/#7297k11/=1304ruo
Is it possible to just use those gears with the shaft since it's only a 0.007 inch difference? Or would I be better off finding a similar motor but with a 1/8 inch shaft?
I forgot to mention my project is a small model which needs the motor to provide power to repeatedly push back against spring-loaded lever.
>>1013669
You can get a drop of glue in it, or something
>>1013671
or shim with with 0.007 shim stock (or a bunch of aluminum foil )
or bore out the gear a little more and make a press fit sleeve