K3100 Heat Controller Square Nut Edition

This is the exact same part as the excellent original (well other than the label), except it now includes the square nut on the side via a slot (like most Prusa parts) letting you screw a M3x8mm screw into the hole on the top edge of the enclosure into steel threads in compression. I loosened the hole up to M3 clearance (rather than tapped) so the screw should slide in easily up to the nut. I printed mine in PLA.

I included the STEP file to mod the mod if you want something else for yours

I am not a huge fan of threading directly into PLA especially for anything that weighs anything since that tends to sag and if you end up screwing and unscrewing the plastic isn't really good for that. So I modded the mount onto the enclosure to use a captive M3 square nut, like Prusa uses on their parts so now steel on steel. Oh and added a label on the front “Heat Controller”