Mesh to BRep for making a Voronoi pattern on a brace

Hi all,

I’m looking for a way to convert my Mesh to a BRep for making a Voronoi pattern on a brace (all voronoi pattern tutorials start with BRep’s).

I tried this:

  1. Mesh to Brep?
    Capture
    But it immediately freezes after i connect Face Boundaries to the Boundary surfaces.

  2. I also tried the plugin from Andrew Heumann (plugin to convert Mesh to BRep) But it immediately freezes after adding my mesh…
    https://www.grasshopper3d.com/forum/topics/obj-into-brep?commentId=2985220%3AComment%3A130347

Does someone have another way to convert a Mesh to a BRep? Or to add a Voronoi pattern on a Mesh Wrist brace?

Kind regards,
Debora

Ps. This is my model where I want to apply it to: