For a 3D PCB like this...
When you try to export to USD
You get this warning in the export dialog:
This error is a significant problem when exporting a PCB because it turns the green FR4 into a black material. The problem is worse because with the mapping Fusion chose to use, other items use Steel Satin too, so there's nothing uniquely identifiable about the FR4 layer anymore so you can't even create a script to remap back to FR4 afterwards.
My suggestion would be to at least map it to a supported appearance in a USD that is close to the green color and give it a name that can be run through a script to remap to an alternate material on the back-end.
This is how it looks in Blender. The FR4 turns black.
Of course another problem that's been going on forever is you don't see the silkscreen legend either because Fusion doesn't export the canvas to a USD. This would be another welcome feature.
