• check how the window method looks from outside with iva overlay on
• is there a way to automatically find windows?
• set up window configs for stock parts
• set up window configs for batches

the external depth masks need to either be disabled or have hatches cut out. Cutting hatches results in them being visible from outside which can be awkward, so disabling is probably the right way to go.

once this is working properly, the convex hull code should be removed.