Supports Aren't Generated Under Enclosed Horizontal Surfaces

kimkash commented 2 years ago

Version

2.3.1

Operating system type + version

Win10 Pro, 21H2 OS Build 19044.1348

3D printer brand / version + firmware version (if known)

What 3D printer brand / version are you printing on, is it a stock model or did you modify the printer, what firmware is running on your printer, version of the firmware #s Prusa MK3S+,stock, firmware 3.10.0-4481

Behavior

Problem: Supports aren't generated under horizontal surfaces when said surfaces are surrounded by walls touching the build plate. Tried to add support enforcer with PrusaSlicer built-in feature or by creating another body in Solidworks and importing as multibody 3MF and assigning second body as support enforcer same result. Added a slight slope (89 degrees) to see if there's change, now there's support but only around 70% of the surface and it vanishes near the top part of the slope. Tried the same method described for the horizontal surface, same results. Important to note: in 'put supports everywhere' mode, still doesn't put supports properly, not just 'only build plate'/'only support enforcers'

Steps to reproduce: I've added files and screenshots to make it easier, but here some short instructions: create a simple box, meaning a cube with rectangular hole in one of it faces. Place it on the build plate so the holed face pointing down. *Try to create supports

Expected Results: Supports below the horizontal/89Deg surface Actual Results: for completely horizontal (90Deg)- no supports at all, for 89Deg- supports about 70% of surface.

Files: