Hex key and mini clamp came in handy for battling a lifting edge
this post was submitted on 10 Nov 2023
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If you have corners lifting during big prints it's nearly always due to a bad first layer or warping. An enclosure, even if it has an open lid since PLA doesn't really like high enclosure temps, would probably do wonders. But if you have an i3 style printer, enclosures can be kind of a PITA. You could also try a draft shield. Basically tell your slicer to print a skirt that's the same height as the print itself.
Pla can also warp when not cooled enough. Although with a a decent textured Pei sheets you should never have pla adhesion issues honestly