getting poor print quality

Ender-3 V3 Printers
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1

Hi,

I am absolutely new to 3D printing. I am working on Ender 3 machine. Using Creality 1.75 mm CR-PETG filament.

I tried various nozzle and bed temperatures, did bed levellings etc but coild not get a better quality print. Can someone gude me how to improve the print quality. My present print quality is shown in the video attached.

-Arun

2

Hello !
Can you share some photos here ? I am not able to click on that link (it is saying I don’t have rights to see this file :sweat_smile: )

3

Thank you Alex…here are two photos of my printed object … extremely hopeless quality of course…

“C:\Users\Arun\Downloads\IMG_20251006_103035.jpg”

“C:\Users\Arun\Downloads\IMG_20251006_103023.jpg”

4
5

Hello Alex…

I am sorry…I don’t understand how to attach my photos in my reply….looking into..

–Arun

6

IMG_20251006_103023
IMG_20251006_1030231920×1366 120 KB

IMG_20251006_103035
IMG_20251006_1030351920×1291 153 KB

Hi Alex…this is the quality I am getting

7

wow !
Looks like a massive under-extrusion.

What are your settings ? (temp, flow, speed)
Same issue with PLA ?

8

Here are my settings…

bed temp..80C

nozzle temp…240C

speeds..

Vmax X-250

Vmax Y-250

Vmax Z-5

Vmax E-25

Could the nozzle need a change ??

9

PETG can be a bit temperamental at first, so don’t stress — you’re definitely not alone.

Here are a few things that usually help clean up the print quality on an Ender 3 with PETG:

  • Bed leveling & nozzle distance: Make sure your bed’s level and your nozzle isn’t too close to the bed. PETG likes a tiny bit more space than PLA — if it’s squished too much, it’ll drag and leave messy layers.

  • Temps: Try around 240°C nozzle / 75°C bed as a starting point. Every filament brand’s a bit different, so running a quick temperature tower helps find the best range.

  • Fan & speed: PETG doesn’t love strong cooling — keep the fan around 30–50% and slow the print speed down to ~40–60 mm/s.

  • Bed adhesion: PETG sticks really hard to smooth surfaces, so put a thin layer of glue stick or hairspray if you’re printing on glass or PEI — it’ll save your print surface.

  • Dry filament: PETG absorbs moisture fast. If you hear popping or see lots of stringing, dry it at about 65°C for a few hours.

If you can post a close-up photo or your slicer settings, people here can probably spot what’s going wrong in seconds. You’re super close — a few small tweaks and that Ender 3 will be dialed in nicely. :+1: