Quote Originally Posted by JAZZCNC View Post
That's defeats the whole point of ATC. The very reason for ATC is so it can be left unattended to get on with the job, if you have to baby sit the vacuum it's a waste of time having the ATC. Nobody who fits an ATC and wants to use it to it's full potential would accept your suggestion.

Those who have a need and can afford an ATC spindle will most probably have a clean Z-axis setup or at least the abilty to modifiy the Z-axis. A retractable or movable dust shoe is a MUST for an ATC to function correctly if it uses a typical Fork or carosel type slide in tool rack.
I agree and am more than happy to design and fabricate the setup above for a paying customer, obviously the design time for such a specific job has to be on top of the dust shoe price