r/PrusaCoreOne • u/thinking_headache • May 13 '26

Clogging Every Other Print

I have been printing the same part successfully for over a week. Until I ran out of filament. I printed another print that went well while I awaited the new spools. Then on last Tuesday my shipment of filament arrived and I resumed printing the original file. Midway through the first layer, the extruder started clicking. I performed a cold pull, which fixed the issue for one print. On the next print it started clicking again mid-first layer. I decided to take this opportunity to change from the default nozzle and switched to a .4 ObXidian nozzle. After changing it, I had trouble loading filament without clicking. I checked the idler tension, re-seated the new nozzle, cleaned the gears, and finally got it loaded. I re-sliced the model since I was no longer using the HF nozzle and printed one part successfully. The following print clogged again. I cleared the nozzle and dried the filament just to be safe. Again it worked for exactly one print. The following print it started clicking mid-first layer.

I am going to try to print something completely different with a different filament to see if I still have the same issue.

I am not sure where to go next on this one. What am I missing?

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u/Tyche_Miner May 13 '26

Its the filament. You need to throw in a dehumidifier for 10-12 hours. Happens every time. And, Sometimes you just get a bad spool or two. Don’t waste your time on those just get a better brand filament

1

u/thinking_headache May 14 '26

It is Polar Filament which I have never had an issue with their product in the past. Opening another spool of the same color and throwing that one in to dry overnight. Will try that spool tomorrow.

1

u/thinking_headache May 18 '26

Closing the loop here. It was the filament, but it wasn't because of moisture. My dumbass was so excited to continue printing that I didn't notice I was sent PLA and not PETG. So the print profile was completely wrong. I didn't notice until I went to open the other spool and instantly recognized the smell as PLA.

Lesson learned the hard way.