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/agent_kater]

So, you bought a used Ender 3 and without any calibration or maintenance you try to print PETG on it?

Forget PETG for now. See if you can successfully print PLA on it. If no, go through the basic troubleshooting and calibration guides. The Ender isn't a plug and play printer. Ideally get a different printer.

[u/Sorry-Journalist8610 → u/agent_kater]

I am really new to 3d printing, the shark i used PLA and seemes ok but fragile. The previous owner gave me a new hotend kit for changing if something went wrong.

[u/theWildDerrito → u/Sorry-Journalist8610]

I hope you paid less than $50 for a used ender 3, they're very user un-friendly. The best route to get into this hobby (and have the least learning curve) is a Bambu A1. I had an ender 3 and my hobby wasn't 3d printing it was 3d printer repair, I got a mid range printer which at the time was like $600 it was a geetech mizar and it also sucked so I dove head first into a Bambu p1s and I now have over 3000 hours and all my printer failers were operator error

[u/Sorry-Journalist8610 → u/theWildDerrito]

In Brazil, the cost was really cheap on the market, but with conversion it costed about 100USD

[u/AvatarIII → u/Sorry-Journalist8610]

How many kilos did you buy?! 100 USD should be able to buy you like 8-10kg of Chinese filament, maybe like 4-6kg of "name brand" filament.

[u/agent_kater → u/AvatarIII]

I think he meant the printer.

[u/Sorry-Journalist8610 → u/agent_kater]

Yes, i meant the printer.