ForeArm with lid

thingiverse

In the original design, you need to screw in the part with a imperial unit screw. As I'm using a M3 screw, it didn't fit well, and by screwing and unscrewing, it losts the "thread". So, based on the actuator DIFF30, I redesign using 4 M3 nut. You need the insert these nuts and close the forearm with the lid using 4 M3 countersunk. This way, the wristshell will screw with nuts, and, if necessary, you can unscrew it as many times you want, since it wont lose the thread anymore