Hi folks. I obtained a pre-owned Anycubic Vyper. Alas, every print features defects in the surface as shown in the picture. It occurs in any type of material. Does anybody know the source of this type of defects?
Wet filament. Or. Bad filament.
Those are bubbles. Try a dryer.
My guess would be hotend not feeling so good. Those white spots look like result of temperature changes.
If you can read hotend thermistor data somehow (OctoPrint, for example, shows a chart for that) and see lots of sudden ±2-5°C changes - that'd be it.
Did you dry your filament? How old is it? Did you get all your filament pre-owned as well? Depending on the kind of material, it has a limited shelf life, once you get beyond that it won't ever print right.
Try some brand new filament and see how that works.
I got results kinda like that before when I tried a Volcano on an old Bowden style printer and printing wet PETG... Tons of oozing.
Does the filament exiting the nozzle make a popping sound while printing? Def looks like wet filament (I have absolutely received PETG "wet" in a sealed bag w/ desiccant) but if you to go after the thermistor and heater cartridge I recommend ordering extra, it's a good part to have on hand.
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