I was punished for not sufficiently tightening the nozzle after cleaning by the Pla oozing out and covering it and then bakinbg on. I was able to get it off and replace it with a new one, this one installed more snuggly.
But how to get the baked-on Pla off?
How about boiling it in a pot for a while?
or possibly burning it off in our spare toaster oven -- in the garage? Or torching it off?
Or?? Any suggestions?