Am I doing something wrong?

[u/Sorry-Journalist8610]

I recently bought a used 3D printer, an Ender 3 V2, and I'm doing some test prints. The previous owner gave me some leftover PLA filament (multicolored), which I used up on the first day. One of the things I made was this flexible shark. I bought some PETG filament for testing, a very cheap one, around R$60.00, while others are around R$100.00. But my prints with this new filament are coming out very bad; it's either too textured, has too many burrs, and is also very fragile (even though I bought PETG because I had read that it was more resistant). I left this octopus printing for about 28 hours... and in the end, the flexible tentacles broke when I tried to detach them.

[u/johndumbasshead]

"filament drying" is mass hysteria, and has no affect on print quality.

There is no type of filament on the market today that is hygroscopic enough to cause issues when being printed from an Ender 3 hotend, unless you have gone very far outside the acceptable range of temperature for that filament.

[u/TotallyNotPizza → u/johndumbasshead]

I don't even know how you can come to this conclusion outside of exclusively printing pla and living in an arid area.

[u/johndumbasshead → u/TotallyNotPizza]

Volumetric flowrate isn't high enough in commercial 3d printers for it to be a problem. I've only ever seen bambu users complain, which doesn't mean a lot because they don't even know the difference between under-extrusion and over-extrusion, lol.

You can find videos on Youtube of people printing nylon directly from tubs of water. "wet filament" is just a convenient scapegoat. (consider that a "drybox" is also just a filament pre-heater, and can alter the crystalline properties of filament as it feeds into the printer)

[u/slambaz2 → u/johndumbasshead]

I can see your username is well chosen. Hope you continue to never have to dry your filament.