I created this remix of the original Anet A8 stock PSU cover by AVZ. I did the following changes to the original design:
- Slightly changed switch position & added two mounting holes for this type of switch: https://goo.gl/images/beXdQb
- Added ventilation holes. Also reduces weight, by 3 grams, yay!
The print doesn't need support, brims, or whatever...
It's recommend to print it with the front facing downwards on glass, so it will get a nice glossy finish.
The cover is fastened with one screw on the top left corner (replacing the original screw in the PSU at that position) and the two screws on the right side (going through the two holes in the PSU).
The switch itself
1x M3x30mm bolt (for top left corner)
2x M3x12mm bolts & 2x M3 nuts (for two screws on the right)
2x M3x12mm bolts & 2x M3 nuts (for the switch)
M3x18mm bolts will also work if you don't have any M3x12 ones left ;-)
Print with face downwards, see images.