I have printed PLA and ABS no problem with my P1S. I made a few small prints with PETG-HF and they came out fine. Then multiple prints went bad. The first print started fine then turned to mesh. The second print was a pile of spaghetti. I cleaned the extruder, replaced the nozzle, and then I got a glob of filament. Cleaned the print plate and printed PLA just fine. Any Idea why I’m having so much problem with PETG? I am new to 3d printing.
The filament is brand new from Bambu labs straight out of the box, and used in an AMS. I used the Bambu labs standard settings.
What temp is it printing at?
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My guess is moisture. In the few PETG HF spools I’ve tested, straight from the factory they have too high of a moisture content to print perfectly for me. Always water effects.
If you are having water issues, they can creep in over time depending on how you store your filaments. The desiccant in an AMS if you are using one only keeps filament dry in the AMS but does not appreciably dry the filament. Drying takes heat to get the water to let go.
PETG HF also gets “sticky” as it picks up water and you have to keep an eye on it. Late this last summer there was a rash of posts here with people finding their extruders encased in filament, split apart, etc. It can curl and stick to the extruder nozzle and then like a lava tube, the molten filament pushes up into the extruder.
But bright side is dry PETG HF well and it prints beautifully.
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Bambu lab settings from the AMS and their software. Im guessing 260 or 270.
I bought a better filament dryer, and dried the filament out. The first print was perfect. Thanks for all of your comments and suggestions.
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