Sweet! Thanks for sharing this very awsome piece of code with us and code archiving it, koekjesbaby. I know I would have never figured this one out with the CameraClsMode command. I've always hated the fact that Blitz3D never had proper 3d line primitive support. So what if this is a hack, it's clean and the best that I have ever seen for Blitz3D! I love little things likes this that can make a big difference in a project. In this case, now I don't have to worry about ever having to use ugly 2d lines to make a 3d-like grid in blitz3d anymore. Ace job you did there! :))))