Hello, am I supposed to be worried about my Lulzbot Mini nozzle turning black? It was shiny when it came with it but after a couple of prints, it started turning black.
If it is a problem, how do I clean it?
Here is how it looks like. Clck into it to see the full image in the right rotation.
If you are printing with ABS you can very carefully clean it with acetone and a very mildly abrasive disposable cloth. If you are printing PLA, I have no idea what Eats PLA to remove residue with.