A quick update…
Whilst everything seems to be working, it appears that the M4x6mm button head screws holding the Z motor in place are not doing so. One is, but one is isn’t holding at all, so I assume I’ve knackered the thread in the plastic.
And whilst that’s my fault, it makes me wonder whether these motor screws should have some captive nuts, as we do elsewhere?
Step 2 here refers:
Build the low-cost microscope - Assemble the motors