This is a remix of the latch to work with thinner spacers and different hardware.

I modified the latch to work with the original 7.5 mm spacers by Synthetic Electron 3D.  The spacer is thinner.  I also made the hole in the spacer smaller to use a small screw.  The screw I used stuck through the spacer a bit, so I had to file down the tip by about 1 mm.

The spacer can be attached to the printer with a “medium” 3M command strip (2.8" x 0.63" or 71 x 16 mm) so you don't have to modify the case and they can be easily removed.

I've initially printed them with PLA, but have some ASA if they start to lose their grip.