this balisong trainer flips pretty well(at least compared to my knifes) and has metal washers and metal “Zen pins” along with some handle and blade weights.
I made this balisong because some of the other squiddy inspired knifes pins kept snapping off and they didn't have any washers.
this balisong only needs m3 hardware to be put together
4x 10mm screws
3 nuts
4 washers
4x 4mm screws (used for handle weights could be replaced by 10mm screws just wouldn't look as good.)
1x 6mm screw for blade weight(again could be swapped out for a different length but might not work as well)
when assembling the knife the first thing you should put on is the blade and when tightening down this part you may need to force the opening not to collapse with either some other thing like a screwdriver or by slightly bending the blade.
PS: the handle weights don't sit perfectly flat the protrude around 1mm on either side so don't fully tighten one down until the other side is in