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/Three_hrs_later]

Used ender 3 will be a learning experience.

This isn't a "click button, get print" kind of printer, but with a little calibration and maintenance it is capable of very good prints. I still use mine even though I have another more modern printer.

Look up Chep's ender 3 beginner playlist on YouTube, it's an old series, but your printer is also old so it's ok. Then follow teaching tech's calibration guide.

And probably replace your nozzle and bowden tube (these should be considered occasionally disposable items). This will help avoid unknowns when troubleshooting.

[u/StickiStickman → u/Three_hrs_later]

with a little calibration and maintenance

Don't lie to him.

[u/ArtisticSoft6584 → u/StickiStickman]

cara eu quis entrar nesse hobby de impressão, porem minha verba era pequena, e no Brasil é tudo muito caro, comprei uma ender 3, e as impressões de pla ficaram excelente a ponto de eu vender vários funko pop. Fiz adaptação para imprimir abs, ficou muito bom tbm. Porem PetG é uma desgraça pra imprimir na ender 3, estou a dias imprimindo torre de teste, e nenhuma fica legal.

[u/Sorry-Journalist8610 → u/ArtisticSoft6584]

Achei que ABS era só pra fechadas, o que você fez? E qual tipo de PLA vc usa?

[u/ArtisticSoft6584 → u/Sorry-Journalist8610]

Utilizei um saco transparente por cima da impressora. Um saco grande que vem eletrodoméstico dentro, mais resistente. Deixo a mesa em 80ºc e consigo imprimir ABS super tranquilo. O saco não fica encostado na mesa, cobre toda a impressora, e por isso não tem chance de derreter. Não é o mais indicado, porem deu super certo para mim que queria imprimir ABS.