Pete,

Do you have any idea how Langmuir made the MR-1 stiff enough to mill steel? Just by the looks of it you would not think it would be steel capable, but videos don’t lie. Have you taken a run at doing any modeling and FEA to tease apart how they are able to do steel?

Do you have any pictures of the 1:2.67 belt drive? I have a small mill similar to a Tormach and my spindle motor is a 3000 rpm AC servo. My pulley ratio is 1:1.5 so I can only get 4500 rpm at the spindle. I would love to get that pulley ratio higher to obtain higher spindle rpm’s, but was told that I couldn’t go much smaller on the diameter of the spindle pulley.