Sprag Clutch

thingiverse

This is a Sprag Clutch. It is used on a lot of real applications. ie; Helicopter head assys It is designed to rotate freely in one direction and to become solid in the other. Print this and try... ;-) It is suppose to have springs in the valley of each roller, but is is not conducive to try it with plastic. You can use cut pieces of rubber band to do the trick. You can cut a small piece and place vertically behind the roller in the V cut.