3DPrinting

21995 readers

76 users here now

3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

The r/functionalprint community is now located at: or !functionalprint@fedia.io

There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml

Rules

No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
Be respectful, especially when disagreeing. Everyone should feel welcome here.
No porn (NSFW prints are acceptable but must be marked NSFW)
No Ads / Spamming / Guerrilla Marketing
Do not create links to reddit
If you see an issue please flag it
No guns
No injury gore posts

If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is ![](URL)

Moderation policy: Light, mostly invisible

founded 2 years ago

MODERATORS

j4k3@lemmy.world

andypiper@lemmy.world

GrayBackgroundMusic@lemmy.zip

I'm doing something wrong; can't print this PETG (imgur.com)

submitted 3 months ago* (last edited 3 months ago) by csm10495@sh.itjust.works to c/3dprinting@lemmy.world

28 comments fedilink hide all child comments

I have this PETG; its Kingroon Blue PETG. I can't get it to print nicely no matter what I do. Been testing with benchy over and over.

The filament is as dry as I can make it. It's been in the dryer for at least 12 hours before each print. I even have tried snipping the part of the filament not in the dryer to start from a dried state. The Relative Humidity doesn't drop anymore at this point (from 19ish).

I've tried different temperatures from 220 to 260. I've tried different retraction lengths and speeds. I've tried with the cooling fan on/off and at a couple middling percentages. Also different speeds from 30mm/s to 45 to 60.

I tried printing a retraction tower and it fell apart after the first level.

The first layer prints more/less fine, then eventually it either just falls apart (most of the time) or produces something in awful quality.

I've attached images of everything I can think of from the way it looks on the first layer, to the case where its a benchy out of a horror film, to when it just fails miserably.

Printer Elegoo Neptune 3 Plus. .4mm nozzle (i've tried both copper and hardened steel). Besides the nozzle its stock. If I swap to PLA it prints generally fine.

I feel like I'm missing something obvious. Everyone says dry the filament, but I can't dry it anymore 😢 .

Thanks folks (and if you celebrate: Happy Turkey Day!)

you are viewing a single comment's thread
view the rest of the comments

[–] csm10495@sh.itjust.works 3 points 3 months ago (1 children)

Should I try a different one? I think all I have are Kingroon PETGs. I got them from a bundle of 10: https://www.aliexpress.us/item/3256806452989007.html .. I have different colors though.

[–] HelloRoot@lemy.lol 7 points 3 months ago* (last edited 3 months ago) (1 children)

Never heard of Kingroon.

I'd try a known good company first.

I once had a nightmarish time with some cheap filament and thought my printer just can't do PETG well. Then I got a good roll from a different company and it printed even cleaner than PLA...

[–] kurushimi@sh.itjust.works 1 points 3 months ago

Had a similar experience; I’d recommend trying something like Prusa filament to start with as I’ve found it to be consistently high quality. From there if it looks good try for something economical