There are very many people using AutoCAD for Timber Frame design and detailing. Quite a few are using AutoCAD "add-ons" or customized software to draw frames and architectural plans. These customized versions of AutoCAD do everything from detailing to providing code to machinery to cut the pieces. But this technology is useful even for non machine shops. Some of us have automated layout functions written into AutoCAD so that we can "unwrap" each piece and dimension each surface. Post again to this forum if you're interested in more, and email me paul@spbrooks.com since I don't visit here regularaly.