I designed this little torque wrench to be able to screw the nozzle to the heating block, so as not to ruin the thread of the thread.

This version has rotor fins with a thickness of 1.2mm, and therefore corresponds to about 2.0Nm.

The strength of the fins can also change based on the material they are printed with, for example PLA is more consistent than PetG.

I am also designing other rotors with different thicknesses, to increase/decrease the necessary Nm force