[Replacement] Paired Hot Ends for Snapmaker J1/J1s (0.2/0.4/0.6/0.8mm)

Note: I said HOT END CHANGE. Not nozzle change. Intended for quick change between nozzle size and/or type (hardened, standard). You also get the cooling fan with sensor, thermal block with resistance core heat and thermistor and a nozzle. The nozzle (tip), same size ONLY, can and should be changed due to wear or tip damage. I have no idea if the full hot end is “smart” and identifies size and type to controller. My plan is to quick change extruders for nozzle size (or hardened) and change just the nozzle (same for same) for wear and tear.

Work as they should. The only thing is that when loading filament, the loading speed is too fast (presumably set for 4mm hot ends), which makes a clicking noise due to the filament feeder “skipping". The J1 should reduce the loading speed if 2mm hot ends are inserted.

Parts are very good, but I don't like the idea of having to spend $100 to change the nozzle size. Surely this could be done in the firmware or on screen selection.