Not sure if you can have random nanomesh assignment from a multi IMM nanomesh brush. If you can’t there’s a workaround. With Zmodeller PolyAction:Polygroup:All Polys and set coverage to a suitable percentage, say 10% (default is full coverage) Set the PG then hide them and assign another PG on the remaining polys. Continue until you have a random set of PGs on all your polys. Then assign a differ nanomesh to each of the PGs in your mesh. I used this method to assign random variations of scales to a snake. Good luck.
A post was merged into an existing topic: Nanomesh–is it possible to apply random meshes from IMM as a Nanomesh?