Lower layers lifting from build plate

What causes this ?
Fresh roll of Sunlu PLA.
Heatbed: 65
Nozzle: 220

The first layers were printed with no problem but it warped while the rest was printed.

Warping is caused by a freshly printed line cooling and hence shrinking on top of an already partially cooled line.
It is particularly noticeable if:

  • there’s moisture in the filament => Dry it
  • bad plate adhesion => Clean your build plate
  • the build room is cold or drafty => relocate printer to a warmer area or fix a simple enclosure

There are further things that can be done but these basics should be covered first. PLA should not need anything else after all.

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