Not an expert in development
- Safe I don’t know, you can use both ways, but Ryein @ryein has done a wonderful job so I prefer to use it rather than redevelop an interface.
2 ) Yes I think you must use Grasshopper/rhino version superior or equal.
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Dendro/OpenVdB is the best tool I know for mesh boolean. Rhino Team has done a wonderful job with ShrinkWrap but it is limited to Boolean Union and Rhino >=8.
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I think there are some forks that are a bit faster (no meshing for vizualization)
From my experience doing tools for companies that 3d print I can say that reliable tools are
Clipper(2) and OpenVdB.