I’m changing the PTFE in my heatbreak, I didn’t realize these seem to be consumables. It started causing blockage.
A guy sent me a piece of PTFE from his Prusa MK3S+ that I could try as i was having trouble finding any PTFE quickly.
I realized I couldn’t just cut a piece and put it in, that caused a lot of filament leakage and underextrusion. The end of the PTFE toward the nozzle was a bit jagged and I believe that’s where the leakage happened. Now I’m wondering how the heatbreak and nozzle normally interface inside the heatblock, should they be touching? Should the PTFE protrude a bit from the heatbreak so there’s a bit of pressure against the nozzle when I screw it in?
Yeah I’ve been printing a little PETG at about 240, but it’s something I rarely do so I haven’t opted for a all metal hotend and as I understood it I thought it was okay until about 250 C, but I guess not. It’s really mostly PLA that I print though.
I’ll look for a PTFE cutter, thanks!