Review on 🔥 Antrader Pack of 6 Aluminum Heatsinks, 100mm x 25mm x 10mm, Ideal for IC, MOSFET and SCR Cooling by Alfonso Alexander

I had an Ultimaker UM2 Ext. Also had problems with stepper motor skipping and overheating (printing a Polymaker Polymax PC in a heated work chamber). I used two heatsinks (one on top of the stepper motor and one on the bottom with a 40 x 10mm fan attached) for each of the stepper motors. They were secured with a stainless safety wire with thermal pads between the sinks and the stepper. The 40mm fan screws perfectly into the heatsink with M3 x 12 SHCS screws (maybe M3 x 14 could be used). No problem with stepper motor overheating as PC prints 24/7 in hot build chamber.