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[Ender 3 S1] Changing heatbreak PTFE (discuss.tchncs.de)

submitted 1 year ago by [email protected] to c/[email protected]

3 comments fedilink hide all child comments

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?

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[–] [email protected] 2 points 1 year ago

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!