I changed it to copy the normals because, updatenormals relies on everything being in the same mesh. Remove the entitycolor stuff to see what happens. It's not obvious otherwise. The normals will not be smoothed together at the intersections and you end up with parts being illuminated rather strangely.
I agree it is a useful routine. What is Terabits speed booster? I must have missed that. Do you mean his weld routine?
I agree it is a useful routine. What is Terabits speed booster? I must have missed that. Do you mean his weld routine?