I have a mesh created from photogrammetry in 3DM format - loads into MoI fine.

What I want to do is create multiple objects on top of the mesh and export individually. I.e. using the mesh as a surface or skeleton or framework to design objects around, so that when the objects are 3D printed they will fit onto the real surface.

What is the best way to accomplish this?

Normally I would create an assembly in my MCAD package but it really struggles with organic shapes like surfaces and won't even load this one.

Thanks, Andy