Ceiling Medallion Material Question

[BrianSaban]

I did one a while back in plaster, here is the link with all the info and pics

Plaster of paris, gypsum powder

Has anyone tried molding plaster of paris, gypsum powder into a block and cnc it? If it works it could be a very cost effective way to make very detailed 3d carvings because of how fine the powder is. Just a thought I had, but never tried. I think I have some in the garage, I’m going to give it a try this week. Brian