Use vertex normals in ThreeCSG until they differ not that mach from polygon normals.
Use vertex normals in ThreeCSG until they differ not that mach from
polygon normals.

Let keep smooth shape for cutted cylynders/spheres 
linev/jsroot,bellenot/jsroot,root-project/jsroot,linev/jsroot,bellenot/jsroot,bellenot/jsroot,root-project/jsroot