Prusa Mini Clog
Hi,
I suffered an epic clog during a overnight print. I had to disassemble both the extruder assembly and the hot end, both of which had become locked up with Orange PLA. I put everything back together, ran self tests and first layer calibration with no problems.
Unfortunately, when I tried first first test print, there was severe underextrusion and clicking from the extruder while it was laying down the first layer. So... I must still have a partial clog. Sigh.
So, I just ordered a roll of white ABS to do some hot and cold pulling. If that doesn’t work, maybe I’ll remove the nozzle and do a deeper inspection.
I checked the idler screw and it seems to be set correctly.
Any other advice?
RE: Prusa Mini Clog
I assume you have followed the steps in this article? https://help.prusa3d.com/en/article/clogged-nozzle-hotend-mini_112011
I had a mini clog like you described as well. My nozzle was clear but I moved the heatbrake/nozzle up as described in the article, just in case. And since then I have no clogs at all.
RE: Prusa Mini Clog
Yes, I did, though I did have great difficulty doing a cold pull with PLA (the only type of filament I had at the time). When I first looked down the nozzle, it appeared to be a partial clog. I tried a cold pull, and the filament snapped when I tried to pull it out, creating a very signficant full clog.
So, I tried more cold pulls to no avail. I then used a accupunture needle to push the hard clog up through the top after some poking. All seemed well, and I reassembled.
I suspect perhaps I missed some remnants of the first clog, which is why I'm planning to go back to cold pulling, this time with white ABS, which is what I've seen recommended. I tried to find nylon filament, but I couldn't find any that wasn't very expensive.
I suppose worst case I can replace the nozzle, which for ~$7.50 on Amazon doesn't seem like a signficant price to pay to avoid further frustration.
RE: Prusa Mini Clog
@ben-kindt
Or use this opportunity to upgrade the nozzle! 😀
RE: Prusa Mini Clog
Any recommendations on an upgrade?
RE: Prusa Mini Clog
Hi, in just 2 days Ive encounter twice filament clog@jam inside the Bowden tube. Its really frustating, after about 60% printing in progress, the filament jam inside the tube betwen the extruder and heater... I have to pull the filament manualy but not easy as it get stuck at the tube where theres a brass ring around the tube. Maybe the brass ring inside diameter is a bit tight and compressed the tube make it hard to pull filament out.
I just want to make suggestion make the bowdens tube inside diameter a little bit large +1 or +1.5mm to the diameter...
I dont know if increasing inside diameter will cause another issue?
RE: Prusa Mini Clog
@jrudad
I asked Prusa support about the Bowden tube, as mine does add a bit of friction along the path. They firmly maintain that my issue (underextrusion, clicking and grinding by the extruder) is due to a clog, not the tube. Still, I did just order a couple replacement tubes, as they are pretty cheap, and I wanted to be certain.
RE: Prusa Mini Clog
Is there other alternative or compatible bowden tube that doesnt cause filament clog @ jam as both of my clog problem are inside the bowden tube.
RE: Prusa Mini Clog
@ben-kindt
i have only had the best experience with these PTFE tubes (XS series): https://www.captubes.com/
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.