Replacement Parts for Vernier Smart Carts

There are a couple parts on the Vernier sensor carts that seem to fall off and get lost easily. Vernier has been great at sending us replacements, but rather than the hassle of calling and waiting, I figured we'd model up a couple quick replacement parts. 

These are replacement parts for the round plunger cap and for the force bumper. The parts are chamfered so that you should be able to press fit / self-tap screw the plunger cap onto the end and/or press fit the bumper to the end of the hexagonal 8-32 screw. 

I've included a link to the parametric Onshape design file if you need to edit / modify to adjust for your own 3D printer tolerances.

Onshape design files: