I am trying to come up with some idea for mounting a 300mm x 300mm platform to use as a large orbital sander ( face up). My problem is I want it to move 1 to 2 cm at it's longest travel. It will be more elliptical than round movement. Will run at about 3 to 4 cycles per second. Only rubber mounts I can source won't handle the amount of movement. Any and all suggestions welcomed. I have considered suspending it. Using sets of ball sliders mounted at 90 deg to each other. Compression springs seems the more obvious but how.
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