Upgrading the Prusa MK3 Nozzle from 0.4 mm to 0.25 mm
I recently upgraded my Prusa MK3's nozzle from the stock 0.4 mm nozzle to a smaller 0.25 mm nozzle to improve my miniature printing results. Prusa has really good instructions for nozzle replacement , which I mostly followed. After some consideration, I decided to only remove the fan mouthpiece, since my intent was to hold the heater block lower than its attached wires anyway (so as to avoid those wires). It worked fine for me, but you should probably stick to the official process unless you feel comfortable with experimenting a bit and possibly replacing something if you break it on accident. I heated the nozzle to 215 degrees so that I could remove my filament, then brought it up to 255 degrees and went to work. I took out my 17 mm spanner and a 7 mm socket wrench, then prepared for the job. After bracing the heater block with my spanner, I used the socket wrench to slowly unscrew the nozzle (remember, lefty-loosey, righty-tighty, but you're working ups...