Heatpress idler wheel for 625Z bearings

I honestly don't know where else I would end up using any 10x15x4mm ball bearings that the original heat set press model calls for, so I snagged one of the two bearings from these rollers that I had ordered for the project (easily popped out using a 12-13mm socket - and you end up with two bearings!

I personally skipped the M4 heatset insert and screwed directly into the holder with an M4x13mm hex head bolt.

You might need to scale the wheel up or down a bit depending on your choice of filament. 

Printed here with Matterhackers Build PLA which was a snug fit :-)

Changed the idler wheel to fit around a 625Z bearing and updated the idler wheel holder to accept direct screw-in M4x13 hex-head bolt