

I’d say your print time per layer might be too high, aince the filament looks to be contracting off of the plate as it cools. I’d see if there was a way to speed-up the print time of each layer, or break up the plate’s large surface area with holes or other features to dissapate the stress as it cools.











I was referring to the waveyness in the center, though the warping on the esges is partly caused by both the oils and the cooling shrinkage, I believe.
The uniform buckling of the layer in the middle of the sheet is what I’m leaning on, but I don’t believe that your fan speed is too high, or there would be more seperation between layers as the filament would cool too much before adhering to the layer below.
I believe there are test STLs that assist in Dialing in your settings for printing plates in particular, but I’m avoiding printing surfaces that large until I get an enclosure built.