hi folks,
i try to develop a slab with a hole (like seen on the pix) for quite a while now. what might be the reason why rhino behaves like this? i did the whole design in grasshopper and all bool operations worked fine. only this object got me some trouble. i work in meters with 0.00001 absolute tolerance.
any idea?
best richard
That’s just the render mesh, its precision has nothing to do with, and will generally be considerably rougher than, your modeling tolerances.
hi jim,
thanks for your speedy reply!
only render mesh sounds like god news. but where can i get rid of this “visual” effect.
i need to print tidy floorplans 
You can start with the Document Settings > Mesh.
See help file here.
that’s it wim!
thx