[karoliina]

Hi,

I think I have almost the same use case here(?). I need cross-sections of my 3D model to be able to construct a measurement accurate mold based on my model.

I have an another "newbie question":
I want 2D projections of a 3D object. But the problem is that my object is a imported wavefront obj (originally drawn on Rhino3D) that is hollow.
I would need to get even cross sections (that are not hollow) out of it and ideally be able to output to CNC for cutting the cross sections for the mold skeleton (the mold 'plug' will have ribs in between 10 cm thick foam blocks which are then sanded level with the ribs to make the designed contour). Any
further ideas how to do that with the AC3D?

I have so far tried boolean operations subtract and cut-away. Cut-away sort-of works, but it doesn't really do what I was wanting it to do (I wanted to get a surface, a 2D slice out of the 3D model and output that slice elsewhere such as QCad and CNC, but instead I get a part cutted away from the main object and the main object severely distorted). Subtract don't work for the object properly, it makes it only look totally distorted. It would be a great feature if this would be supported on some future version in some more automated way.

So I am guessing that the boolean operations would work better if the object would be solid with no open edges. However, the object is a half of the object and is hollow. I would like to copy half, flip it around, join the halves, and make the object solid so I could use the booleans without problems. However, I haven't yet figured out how to do that. Any tips on how to do that and it would be helpful to know if that would work?

Karoliina