3DPrinting

15583 readers

55 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: !functionalprint@kbin.social 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 1 year ago

MODERATORS

andypiper@lemmy.world

henry_rowengartner@lemmy.world

j4k3@lemmy.world

GrayBackgroundMusic@lemm.ee

Stuttering when printing PETG [SOLVED] (sopuli.xyz)

submitted 10 months ago* (last edited 10 months ago) by DreadPotato@sopuli.xyz to c/3dprinting@lemmy.world

19 comments fedilink hide all child comments

I tried printing with PETG yesterday, and I noticed that it intermittently stops moving during the print for a few seconds. It doesn't throw an error or anything, just stops and then after a few seconds resumes as if nothing happened. But this creates huge blobs where it stops. It only happens when printing PETG, not PLA. Could this be caused by a filament setting in my slicer? I'm using prusa slicer. I inspected the gcode and there are no stops, pauses or color changes etc. in it. The behaviour happens both when printing from octoprint and directly from SD card.

Edit: these random intermittent stops are 10-20 seconds long, causing massive blobs from oozing filament.

Edit 2: so it seems to not actually be a PETG specific issue, but rather a model size/speed issue. I can get it running without stops if I just reduce print speed. When I crank speed to 100% I start getting these weird 10-20 second long stops.

So I'm overloading the controller with a lot of gcode commands in rapid succession? I'm running at slightly lower than manufacturer default Max.

SOLVED: the gcode resolution was set too fine, I increased it from 0.0125mm to 0.5mm as described here and the stuttering disappeared.

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

[–] TwanHE@lemmy.world 1 points 10 months ago (1 children)

Thinking about this again, could it be you have something like "wait for layer time" on and a very high minimum layer time set for your petg profile?

[–] DreadPotato@sopuli.xyz 1 points 10 months ago* (last edited 10 months ago)

I was overloading the controller with gcode commands due to high gcode resolution. I dug a little in to the terminal and could see that locked it up due to a checksum mismatch of commands when using octoprint. I'm guessing a reading speed/buffer issue is the cause when using the SD card.

I decreased resolution from the profile default 0.0125mm to 0.5mm and it went away. I'm going to see how fine I can set the resolution without introducing the stutter, but at 0.5mm it still looks good.

I was potentially trying to execute 24,000 gcode commands per second with that resolution when moving at max speed, now it's down to a more manageable 600 commands per second.