Load your model and profile into the workspace (as if you're preparing to slice)...then File menu===>Save Factory file

For me, the issue comes from changes made in v4.1 where the behavior of the application of top solid layers (and I think bottom solid layers as well) was changed to address a reported error that I have no recollection of ever experiencing or reading about...which is not described in the release note...

I think I've asked this question before but got no comments or replies from anyone.....but I'll try again. Is there anyone else who is printing very small parts on their fff printer using S3D?? Or am I pushing printing on the limits on my own? I've been successful in printing this part, which is the...

To expand on the answer..... The processing is somewhat like this..... Raft base layers are printed slightly slower than the default speed (I think) and are up to 5 times thicker than the set layer height. Raft top layers are printed at the same speed, but at approx. 2 times the set layer thickness....

That's okay. There was a change in the processing of top/bottom layers in v4.0 that didn't quite work right...and it was corrected in v4.1.1 What you seem to have is another slight side-effect of the same set of coding changes...….which I think S3D need to take another look at. S3DJake/Alex/Chris......

Try this.... Look in folder c:\users\YOURUSERNAME\AppData\Local\Simplify3D\S3D-Software for the file savedState.factory….and delete it. If this file was corrupt, then you'll then be able to run S3D. It may be that you've previously used filenames with extended character set characters....which you s...

Use the Separate Connected Surfaces option on the Mesh dropdown to split the two meshes out of the .stl into separate models. The part will slice correctly after you do this.

Radruss….what version of S3D are you using?

You've answered your own question. A solid 20x20x20 cube is not hollow. Edit the solid cube in a CAD package so it is hollow....and its hollow. And bridging will then apply on the downward facing surface INSIDE the hollow shape. Setting the printed infill to zero does not magically make the object h...

Without seeing exactly what your shape is and what the feature types are , I can only hazard a guess......and that is S3D is maintaining a number of solid top (or bottom) layers on a sloped surface by using infill.