3DPrinting

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3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

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How Hard did I screw myself by """Cleaning""" the Nozzle at 300°C... Multiple Times...? (lemmy.blahaj.zone)

submitted 2 days ago* (last edited 2 days ago) by [email protected] to c/[email protected]

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Back in December I got my P1S and since I mostly printed Vases and plant pots back then, I decided to mostly use PETG.

That PETG as I now know was just Wet, which caused it to ooze out of the nozzle after the print, a Fact I hated. Since at the time I must've be pretty stupid, I decided to clean it by Heating the Nozzle to the max of 300°C and let it ooze fully out. It did work and the prints after it where fine... so I did it another 10-20 times until I got a Brass Brush and started just using that...

In retrospective, Filament really shouldn't be heated over its limit... because that probably Backed in the PETG really hard. Mustve been to the point where the nozzle clogged, getting me to cold pull it a lot.

Big question is, is there still Backed in PETG in that nozzle, even after 20 or so Cold Pulls? It definetly seems to underextrude a noticable bit. Should I use the replacement nozzle or look into other reasons for said Underextrusion? Thanks!

Edit: Did as suggested and tried swapping the nozzle, thermistor was stuck and getting it out broke it, replacement thermistor is gonna take till thursday to arrive, god I hate this machine

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

My mk4s has just been replaced by Prusa. I've been chasing down first layer problems that manifested as load cell bed scan calibrations being haywire and filament blockage false positives.

After replacing just about every part of the nextruder 2 parts at a time, it started leading to the loveboard being the culprit, but after 6 weeks of troubleshooting, I asked for this to just be solved already, so they've JUST delivered the replacement.

So for me, it will be starting from scratch sith my mk4s, and figuring out what's needed.

Given I print mostly PETG structural parts, I'm imagining that I'll likely end up with 0.8mm as my default, and 0.6mm Obxidian as my abrasives nozzle. (I have been waiting to print PCCF for a while...)