I'm about 6ft tall and my Bridgeport Series 1, needs a little bit of extra height. It's currently sitting up on blocks at the corners. I'm thinking about fabricating a dolly similar to the pic below, but extending the length of the cross members to allow some fore/aft "side bars" with heavy duty casters, to be be bolted down to the top surface of the cross members. As you tightened the bolts, on the "side bars", the mill would be lifted off the feet and onto the wheels, and would then be free to roll. Hardware would be sized appropriately of course, but I'm concerned that there would be a period, as the bolts were tightened, that the weight of the mill would be hoisted and "suspended" loosely on the threads of the bolts and nuts, before the structure were tightened down and "unitized". The alternative would be to size the hardware such that the wheels would almost touch the floor when everything was bolted together and unitized then "retract" the feet. Thoughts?