3D Printed Torque Wrench
Star shaped pattern. Lets go after a certain torque is reached. Can see the mechanism, and this may be relevant to a 3D printed clutch for the cordless drill - 
3D Printed in Space
3 in-lb ratcheting torque wrench.
File download- 
- 50 Nm force from ABS socket - 
- 80 Nm for polycarbonate socket, appears to be 1/2" drive - 
- 100 Nm for Ultem -