Ever get blobs of filament sticking to the nozzle? Or have a difficult time keeping the extruder at a constant temperature when the part cooling fan is on?

Put a sock on it!

These little beauties just clip onto the heat block and keep everything clean and at the proper temperature. They don't last forever and will eventually crack or deform from so many heat-cycles, so best to keep a spare.

Cost: ~$2 each

Install: 1-5 minutes depending on which part cooling shroud you have installed

In case you want to use a V6 nozzle on the Nextruder, install it together with this nozzle adapter.

Cost: ~$30

Install: 20 minutes