Finally got around to sorting the proximity sensor bracket:

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I think I'm finally there with the design, still need to finalise the motor choice and sort out some sort of levelling feet - can't decide whether to add levelling casters, they're pretty expensive but probably worth the money if I ever need to move the machine. At the minute I've just got M12 nuts welded on to the base of each leg - they look a little small to me but it seems M12 feet are good for 1000kg each - should be enough!

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