I made this spiral to test how flat my printbed is.
!!! --- I printed only the outline of the object to test it. --- !!!
I sliced it with Cura:
First Layer High: 0,25mm
Nozzle: 0,4mm
Wall Thickness 0.4mm
Top/Bottom Thickness 0,0mm
Infill: 0%
Test_Spiral.STL | 10.4KB |