Vintage Denon Direct Drive Turntable

My post of 01-26-09 should be ignored. I later learned that using a CNC milling machine to cut the hole for the Denon would be very very expensive vs using a water jet and probably less precise.

Lew, I was asking about routing, for the armboard recess, inside the main plinth, rather than making a second plinth for an armboard (which should be possible with a waterjet as it could simply be two pieces of the same single slab (a large rectangular with a square cut out at one corner), though small adjustments could be difficult to make using a large block of slate...

A revovable arm-board would be desirable, I did consider trying to get a square or circular hole cut through the plinth with a lip half-way down for the arm board to sit on, but this would depend on the type of kit used to cut, Given what Lewn said about the water jet cutter, I imagine that the cut-out will be quite rough and the 'plug' will be equally rough if not in pieces so a new block of slate would need to be sourced, cut and finished off to sit the arm in. Perhaps a circular hole would be better, as a conventional drill could be used, and I dont see why a 'lip' couldn't be incorporated.

What do you guys think would be the best type of footer to use under these hefty slabs? I intend to use RDC cones, cups and combi bases. Would a solid 'less compliant' footer be better perhaps, The chap who sold me the Denon suggests cerupucs or still points, but I'm looking for a less expensive solution.

I am having some slate cubes made using the piece of slate that dropped out of the slab when the hole for the Denon was cut. It was easily large enough to give birth to a dozen cubes, each 2X2X2 inches. But I am also thinking about feet that provide better isolation or decoupling from the shelf. I like Herbie's Audio feet, but they are not high enough, as I would like at least 2" of clearance. Rollerblocks are another option.