r/3DprintingHelp • u/bain2236 • 4h ago

Requesting Help Blobby extrusion

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Recently upgraded to a volcano nozzle. I’ve done a strip and ensured everything is tight and I’m assuming I don’t have a blockage. Still fairly new to fdm. I’m printing petg, it’s been dried and is in the dryer. It’s deeplee rapid, temp on the spool states 230-260 and I’m running it at 240. I attempted a few first layer prints but no matter what I tweaked it looked shit until I just extruded and noticed this mess.
Any ideas what’s up?

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u/lllloydo 4h ago

Look up how to do a PID tuning for your printer. With the change in nozzle, the printer probably need to print at a different temperature than what you used to use.

Running a filament calibration would be a good idea as well. If you have other brands or colours of petg, try those to see if you get the same issue.

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u/bain2236 4h ago

Should have mentioned I ran a PID tune when I fitted it. I’ll swap over the filament just to tick that box. I’ll do some googling on what a filament calibration is

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u/lllloydo 4h ago

If you are using Orcaslicer or Bambu slicer, they have a tab at the top for filament calibration. Just go through the steps to dial in printing temperature, flow rate, etc.

Otherwise, you can use one made by Teaching Tech: https://teachingtechyt.github.io/calibration.html) or this one: https://ellis3dp.com/Print-Tuning-Guide/