I had an old industrial frame that I was determined to use so made up a table for my Pfaff 335. Naturally, it's heavy and the only way to fit castors was to weld them to the bottom of the legs! This raises the whole thing up, including the foot pedal, and consequently I need a taller chair because the frame's not height adjustable, of course. I also had to add a piece of bungee cord to the back of the pedal for extra support due to its weight. This machine doesn't get used a lot but I'm not sure how comfortable the setup would be for extended use.