So I have been playing around with mask → extract shell to create printable negative moulds. However it tends to cut back into itself ruining the surface of the mould. I have tried to then use a copy of the original piece as a hollow and then voxel merge it with the shell, but that kind of messes up the surface as well, for some reason. Any tips to work around this?
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Why are you trying to make a shell?
Why not make a cube around the sculpt, then subtract the sculpt out of the cube? Then you have your negative.
I have done this as well but a shell would really allow me to do larger more cost (and time) effective prints
