I can't get access to m2 thumbscrew for some reason, there is no one sell it in my country, and i can't get access to aliexpress, so made this.

BOM:

1. m2 lock nut
2. m2x12/15 headless screw

print with your finest nozzle and setting.

If you don't have m2 locknut and headless m2 screw. You can use regular m2 nut and screw but you have to use super glue, since we use lock nut to make sure the screw didn't unscrew itself.