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Petg printing problems
Posted: Sat Feb 22, 2020 7:36 pm
by Lennie1972
I’ve been having problems dialing in my printer for petg lately. I never had a problem printing with it in the past but no matter what I do now it print with either hourglass sides, elephant foot or rough to no top layer. I just leveled my bed down to the millimeter, changed the hotend temp to various temps 230°-250°. Bed temps from 60-95. Here are some pics of my most recent attemp. Any help would be appreciated.
Re: Petg printing problems
Posted: Sun Feb 23, 2020 12:23 am
by ednisley
Lennie1972 wrote: ↑Sat Feb 22, 2020 7:36 pm
never had a problem printing with it in the past
The first thing to ask is "What's new & different?"
Start with:
- Set the measured filament diameter into the slicer
- Calibrate the Extrusion Multiplier to produce the proper thread width
- Print five single-wall test squares across the platform, verify their measured height against the model height, and adjust the platform appropriately.
- Print a solid test square to verify the infill & perimeter overlap.
leveled my bed down to the millimeter
Remember, being off by ±0.2 mm is the difference between mashing the nozzle on the platform and having no adhesion at all:
https://softsolder.com/2015/11/12/3d-pr ... alization/
Basically, figure out what you've changed, undo it, and start afresh without assuming anything …
Re: Petg printing problems
Posted: Sun Feb 23, 2020 12:53 am
by airscapes
If what Ed said is a mystery, please tell us which nozzle size and layer height you are using and I will post a couple of models to print so you can perform the calibrations Ed is talking about.
Beside the multiple possible calibrations issues, a roll of wet PETG is not going to print very well.. Is this a new roll or one that has been open to the air for a long time. All PETG is not equal .. I use eSun and have had little issues.
How do you store your filament?
Attached are some PETG items I print regularly..