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[troubleshooting] Adhesion issue (imgur.com)

submitted 8 months ago* (last edited 8 months ago) by bort@feddit.de to c/3dprinting@lemmy.world

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I am somewhat new to 3d printing and i am playing around with different filaments and print plates on my cheap ender3 v3 se.

Right now I am observing a weird adhesion-issue i have not seen before: The copper-silk filament has trouble sticking to the printplate, but only in some places of the plate.

My guess it's either some dirt/oil on the printplate. Or maybe the silk-pla has bad adhesion.

What do you think?

This printplate is this (but glued over the original printplate): https://www.amazon.de/dp/B0CL5FYHBR

The filament is this: https://www.amazon.de/dp/B09CPBRQXS

some clarification for the video: all corners of the first layer should have been rectangular. Instead some corner lost adhesion and become roundish. Here is the view from the slicer: https://imgur.com/rwA0fQW

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[–] killeronthecorner@lemmy.world 8 points 8 months ago* (last edited 8 months ago) (1 children)

Try increasing hotend temp for first few layers and hotbed temp throughout
Try moving z closer for first layer
Repeat both of above in small increments

FWIW, those PEI sheets usually need higher bed temp than the regular sheets

[–] bort@feddit.de 2 points 8 months ago (1 children)

Try increasing hotend temp for first few layers and hotbed temp throughout

the default from the printer was 60C. I had some better results with 70C. But the issue still happend with more delicate prints.

those PEI sheets usually need higher bed temp than the regular sheets

thanks. I didn't know that. What magnitude are we talking here (like: 10K more for PEI-sheets? or more like 1K?)

Try moving z closer for first layer

I think this may be the solution. How much should I change the z-offset? (the print in the video has 0.2mm layer height. And the worst-adhession issues happened with 0.1mm)

[–] Tolookah@discuss.tchncs.de 5 points 8 months ago

K Kelvin, not K thousands of degrees... It's too early to think.

You may also have a bed flatness problem, if it's not a dirty plate.