CompuServe Messages

The command "object unify" will not work if the only some of the faces in an object are in wrong normal direction. The solution is too use "face flip" to flip each face individually, When you perform a series of boolean operation on one object, such as a series of holes, grooves or whatever, the sequence of picking the object for boolean operation is tricky. It is always better to do those from the inside first and work outwards. If you still have problem at the final object, then you need fix the meshes by "edges\turn". Most of the time, you do not need to rely on other software.