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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] 3 points 1 year ago

When you order bowden tube it comes with a cutter. Make sure your fittings are tight.

But also heat up the hotend remove the nozzle and tube. Then push in through a piece of old bowden tube. This ensures there is no remaking plastic in the throat. Now reassemble. the old ptfe tu