Eggshell mold creation

This seemed like too much to ask from Preform. But now that “hollow” and “hole” have been added and seem to work really well it seems like an option to make an eggshell mold from part geometry is just inverting the hollow function. Then you can use hole to add one where you need it.

Hi Jeremy!

I’ve passed the feedback along to our software team, thank you for the suggestion!