Poor first layers on prints on P1S

[Lenyo]

I don’t consider the benchy a stress test, its quite simple actually.

What you are noticing is the solid base of the model, on benchy its the deck, it’s where the structure of the model changes from having a filled in base to an open area. This can make cooling uneven resulting in a bulge.

See here:

Z Layer inconsistency

This is not unusual and there is a simple explanation. When you add some kind of geometry to a print, the internal preassure inner walls are also different as one changes levels. As filament shrinks, one will see this expressed as horizontal layers lines. One way to visualize this is by printing a benchy with only one outer wall. You will likely see a line on the wall where the deck meets. [image] There are some workarounds but the quickest way to test this is to increase the number of walls…