Interesting set up. I like the centering post idea for alignment once you drill part way through a stone, you flip it over and continue drilling so you minimize the chip out at the hole. Looks like you could just purchase the drill bits and cooling system and center post (for specific drill size) and adapt to any drill press. The Proxxon drill press they sell is a 240 volt so they are selling a transformer to accommodate standard US 120 volt systems. This boosts the price up substantially. The 120 volt version of this drill press is readily available in the US through other sources. So for ~ $ 400.00, if you have a drill press, you could utilize their system.
I wonder why they didn't design a water tray into the system. One that you could control the direction of the cooling water....tray.. hose to even a bucket would be cleaner.
I would be curious if having a piece bearing only on a surface that equals the diameter of a drill bit would tend to point load the stone more (concentrate the drill press force) leading to breakage.
