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Not tight enough?  

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MrFlippant
(@mrflippant)
Trusted Member
Not tight enough?

I noticed some blobs on prints after re-building the hot end from a catastrophic plug. I thought it was just some "catch and release" filament, but the color wasn't right. Then I was worried that I had assembled it wrong and was melting the housing. Upon closer inspection, it's pretty clear that filament is squeezing out above the heat block. I have to assume that I didn't tighten it enough, but before I go through that process again, I wanted to get input on any other possible mistakes I made during the hot end assembly process.

Veröffentlicht : 14/07/2018 6:53 pm
Rosparovac
(@rosparovac)
Estimable Member
Re: Not tight enough?

Use same procedure as in nozzle change (see prusa blog) heat up 285°C, and tight heatblok up.
Not nescesarry to disasemble all extruder, but it will be better to clean up and check ptfe tube.

University: MK2S upgraded to MK3 with MMU2.0
Home: MK3
Materials: ABS; ASA; PETG; PET; PLA; Nylon; Nylon Carbon; CPE;
SW: Freecad 0.18; Slicer PE And still generating more troubles than whole forum together.

Veröffentlicht : 15/07/2018 2:54 am
MrFlippant
(@mrflippant)
Trusted Member
Themenstarter answered:
Re: Not tight enough?

I heated it up to 270 and tightened again per the e3 guide and was able to get it a little tighter. I'm checking the area after each print, and so far, so good. I've got another hot end ready to go if this one fails,

Veröffentlicht : 15/07/2018 6:29 am
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