Either a CAD modeler uses a structure tree, or it doesn’t; Paul Hamilton explains all. Originally published August 2007 in Engineering Automation Report, acquired in 2010 by Jon Peddie Research. By Paul Hamilton PHusion Engineering Solutions [Editor’s note, 2007: For years mechanical design has been dominated by history-based modelers. From the day Pro/Engineer first came … [Read more...] about 2007: A Primer on MCAD modeling technology, part 1: It’s all about the trees