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I was originally thinking if there was anyway to generate normal(s) on a surface and then line those normals up with the coordinate grid

I'm running it on a Mac so I cannot yet try out the latest version :/ Additionally, thanks a lot, I forgot I was able to sample points. Taking cross sections will be much easier. However, this leads me to reiterate one of my questions - is there any way to ensure that a mesh is exactly in line with ...

Primary Issues: Is there any easy way to ensure I am tracing a polyline so that all selected points remain in the same plane? Also, when rotating/translating meshes is there any way to line it up perfectly with the coordinate system (maybe define a normal and then use the normal to align the mesh)?...