I am using MOI for 3D printing. Do I have to union all of my designs or can I leave them as separate parts flush up against each other?

 From:  Metin Seven (SEVENSHEAVEN)
6945.9 
Just thought to add that if you make use of a 3D printing service like Shapeways, intersecting parts will be auto-Booleaned, so you don't need to do that yourself first.

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