Perforated triangular metal sheets

hey guys,

i am playing around with some perforated triangular metal sheets. the goal was to array a certain amount of spheres on my evaluated surface and then simply use trim solid to punch holes out of the surface.
unfortunatly the results are awkward, i dont know why. also my approach to offsetting the edges for the outer frame seems not to work.

my definition just works for one surface, but it should work for any number.

could you please give me a helping hand?

cheers, (11.5 KB) perforated-triangular-metal-panels.3dm (64.1 KB) (15.5 KB)

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thank you very much! <3