I don’t print any abrasive materials at all. Pretty much only normal PLA and PETG.
I noticed, that my print quality gradually went down quite a bit, especially in the last few prints. I had a lot of stringing, weird blobs, and scarred surfaces.
Now, the print quality is as good as it should be!
They are dirt cheap. You can get a set of 10-15 generic ones, in different sizes, for only a few bucks. Don’t forget that they are consumables.
Change your nozzle randomly and without warning
So mid print, pause and resume just like with replacing a filament roll.
Gotta be unpredictable, the nozzles can smell intent.
What if I’m inhouse instead of intent?
Then you’re camping!
Gotta sneak up on them, slowly and carefully. Just like that damn snail.
Nah, that one is a decoy.
Hold
Ctrlwhile moving and PressFto change nozzle.