So far I have only used 3 screw types.
- 5/16" flat head, 3/4" long ( That I think would be better at 1"long) are used to attach rails, swing arms and bearings using counter sunk through hole and nut.
- #10-24 pan head, 1" long (That I think would be better at 1/2" or 3/8" long) are used to mount motors, PTFE bearings and the end supports to the rails. These are use with tapped holes in either the plexi or the aluminum. This is a little more work than the though hole and nut but gives a nice precise fit.
- #4-40 pan head 1/2" long are used to hold the springs to the swing arms in leu of the small nails suggested. These are drilled and tapped.
Im sure the nearest metric equivalent would work fine for those who are so inclined but holes in the laser cut pieces should be adjusted.
Here is the time lapse...