Any suggestions as to what might be causing such a rough finish on the underside of an object printed with support material?
As a test, I'm trying to print a 25.4mm sphere with auto-generated support material.
Infill %: 30
Inflation: 0mm
Dense support layers: 0
Dense infill %: 70
Print support every: 1 layer
Horizontal offset: .3mm
Upper vertical layers: 1
Lower vertical layers: 1
Support pillar resolution: 4mm
Max overhang angle: 30 deg
Support infill angles: 0