STL model won't explode

I’ve created a model, saved it in STL format and then re-loaded it into Rhino. The model is one object. When I explode the model I get several pieces but one of them will not explode any further. I don’t have the same issues in my 3DM file from which the STL file is derived.

It’s almost as if some of the model characteristics were kept in the STL file, but not others.

Any ideas?

Hi Ether- the STL importer welds the incoming meshes at 22.5 degrees by default- you can change that in the Options on the STL open/import dialog.

Does that help?


Yes. Thank you Pascal. I was wondering what that setting meant.