I was thinking of something retractable.I would think casters would only work if they could be retracted or stationary legs extended, otherwise the machine will be walking around the shop. It's not stainless, just galvanized sheet metal over plywood, this was done by the previous owner (who did a nice job).
A recent post linked to a doc in downloads section from Atlas showing the cabinets they sold for lathes and shapers, that's given me something to think about.
Tim