The redesigned extruder plate allowed me to print flex filaments, but for some reason I noticed my extruder stepper is getting very hot.

At first, I thought it was related to a misconfigured stepper driver, so I reduced the power to the bare minimum, but my extruder is still getting quite hot.

Then, I realized what is happening is that the stepper has direct contact with the cooling block, and some heat transfer must be happening. This is an attempt to resolve this problem, by separating the stepper from the cooling block. Not tested yet.

Category: 3D Printer Extruders