this post was submitted on 19 Jul 2025
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3DPrinting

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Print refusing to stay flat in corners (fedia.io)
submitted 2 weeks ago by Silfeed@fedia.io to c/3dprinting@lemmy.world
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https://imgur.com/a/oXQJArS I’m hoping you guys can help me figure this out. I have an ender 3 pro, running on marlin firmware. Every time I try to print something one of the corners will lift up like that and ruin the entire print. I installed a crtouch to help with leveling, installed upgraded metal bed wheels to help it not fall out of level. Even tried a glass bed with glue and it still does the same thing. I used a filament dryer and have a heat enclosure. I’m starting to run out of ideas on how to fix this. Any suggestions? The pic is how it starts and that was just a brim since I used to always use a raft and thought I should try that instead.

Edit/update: after spending the better part of a week just troubleshooting different suggestions I have found what I think was the main culprit. The filament I was using seems to be of really poor quality. I switched back to a glass bed with glue and could get the hatchbox yellow I had left over to stick really well after I dried it out, when I tried to dry out the black I was using and switch back to it, it immediately pulled away after the 2nd layer.

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[–] fulcrummed@lemmy.world 4 points 2 weeks ago

From my relatively lesser experience I can suggest a couple of easy things to cross off your list.

  • look at first layer thickness, not sure how thick you’re going but thicker material is more likely to stick and stay put.
  • reduce cooling (eg fan speed) in the first couple layers to promote adhesion
  • as others have said, clean your print bed, I’m a fan of isopropyl.
  • increase bed temp by 5°C
  • slow your first layer(s) further.

I am certainly no expert- these would be my first ports of call before I start praying to the google-fu gods.