Stepper motor speed control box.
thingiverse
It's a box for the stepper motor speed control shown in the photo. I made the tolerances on the holes in the top extra generous due to the haphazard positioning of the connectors, switches, heat sink and the potentiometer. The big diode will also poke through the top. It's meant to be a box to prevent it from shorting out on other things, so it can be used without having to be mounted to a board or something. Minor update to the top. I pushed out the side of the heat sink opening for more clearance for very crookedly mounted heat sinks. You'll probably have to push the big diode a bit towards the knob side to get the top to fit.
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