Screen Structure / Hole Pattern for Paper Pulp Molding Tools

[TrippyLighting]

I wonder how you want to evenly space holes across this complex geometry?

How would you expect holes to "flow" around all these right corners?

No, Fusion 360  does not have that Flow along Surface function. 

[paul.schickel]

This is exactly my problem.

There shall only be holes in the area that resembles the geometry of the target tray. The rest of the tool is closed, so no fibers stick to it. The block in which the cavity lies should be shelled (2-3mm) from the bottom and maybe enforced with some ribs. The holes only need to be on the surface of the cavity that has no right angle.