Hi All - I have been whittling away at a heavy duty benchtop router. This thread is picking up close to the rough design completion. I'm about to compare a belt drive to a ballscrew drive and make the decision which way to go. The machine is intended for hobbyists and makers. It is a 1/4 sheet machine and will take a full sheet overhanging. So in theory if you register the setups you could cut a full sheet. Its for hobbyists who have a benchtop or small garage space. It's bigger then chinese machines and uses 20mm square rails for its motion control. I looked at 15mm miniature rails, 15mm std rails and the price was similar so went with the bigger rails and cars. This thread will be more about the build then the engineering. Its bench is a made from 19mm hardwood ply or birch ply. It's a high rail design so its stiff and contains dust well. It's a good size for guitar makers. I may extend the outer sheets to create a box to contain dust even better...All comments appreciated Peter