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That's very helpful, thank you! I'll make sure to follow those steps next time I attach the nozzle.

I did not do that. Is that something I should do every time I install a nozzle? What type of impact does that have on the filament coming out of the top of the heater block?

I’m new to 3d printing so any tips would be very appreciated! I've been working with PLA at 210 C on a Rostock v 3.2. I previously had a leak that got filament throughout the heater block and in the area where the nozzle threads into the hot end. I cleaned it as best as I could and replaced the s ...