If I try to boolean subtract 3D text that I bend and insert to fom a ring in Gemvision Matrix (Rhino), I never get solid, water tight mesh that has no errors. If you boolean subtract 3D text that is bent around a ring in Zbrush, I get a water tight, error free mesh instantly with no problems.
You are going down a path that has worked for me. Been learning matriz for 6 years and bought zbrush core a couple years ago. Rhino the platform matrix is built on, was dumping tsplines and gemvision replaced with clayoo. Both are modeling, sculpting software.
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