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BL A1 Textured PEI plate, print is warping. What to try first? (lemmy.world)

submitted 1 week ago by KingDingbat@lemmy.world to c/3dprinting@lemmy.world

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I have a BambuLabs A1 and a textured PEI plate. I'm using PETG filament

I'm printing my first larger footprint project and isn't going great after dozens of flawless smaller prints. The model curls up at the corners (warping) while it is printing.

I attempted to help by adding a raft and brim, but it still happened. The plate has been freshly cleaned too, so there shouldn't be oils. I don't enclose the printer because my garage's ambient temp is typically pretty hot, between 95-110 degrees this time of year and rarely fluctuates. I say this not really knowing what enclosing the printer might bring it up to inside. I just haven't had any problems that required it so far... so?

After reading up on the problem my first thought was to increase the temp of the print bed to help keep the layers from cooling too fast. I usually use BambuStudio's default settings for PETG. But what temp to set it to?

Also, considering adding adhesive to the plate, but not sure what would work well with the textured PEI plate.

Any thoughts to help me out? Thanks!

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[–] rodsthencones@startrek.website 2 points 4 days ago

I'd try raising the temp on the heat bed and maybe on the extrusion for the first layer.

The bed arcs up in the middle when it heats, so it may also be an issue with z offset. If it is 0.35 in the middle, but 0.45 at the edge, you might just need to smoosh the first layer more. Speed also effects first layer, so slowing down sometimes helps.

Find a big flat one layer test print and see what helps. Just don't doal bunch of changes at once.