In preparing STL’s for print, I was wondering if the following situations are “legal”, and if not, how “bad” is it when encountered by Preform for slicing of layers…I have two situations I’d like to understand.
- Two single-walled sphere’s that are identical in size, but displaced along a horizontal axis by 1/4 of their radius.
- Two double-walled spheres with a small “air hole” in the bottom of each, separated exactly as above in #1. Where the hole in each is topologically clean (so that each sphere is ‘manifold’ - no border edges)
The point of the question is to understand two things in each case:
A) Structural integrity aside, is it generally ok to overlap individual parts that are each are clean&solid. Will this mess up the slicer in anyway?
B) In terms of structural integrity, for the final print, can this approach be used during construction of models to ensure things stay together (rather than just creating a single continuous, closed mesh to represent what could have more easily been created with overlapping “solids”.
Sorry - I know this is a bit of an abstract question, and I’m sure it depends a bit (at least for case #2) on the thickness of the sphere wall. But if I could understand it a bit better, I think it could open up some nice modeling short cuts.