I’m going to have to disagree. I have used Accura sla materials in conjunction with Objet Tango materials that translated into direct dims for the two shot part. We utilized snap features instead of screws for assemblies that hold liquids.
Obviously there are limitations to 3D parts. Brittle. Can’t weld them. No guarantee that the tolerances will match IM. But I have found at the very least they will get you to a metal-safe start on your tooling. Once you have committed to 5-6 figures on your tool, an extra thousand or two to nibble a thousandths or two is not going to break my budget. Have you ever had a tool that didn’t need changes after first-shot parts?