Thanks for the feedback fellas.
T-Bone, I took those 'action' shots the other day, however neither the motor unit nor the arm were secured into the slate, and it was sitting on large temporary sorbohane footers, but it sounded rather good considering with more romance in the mids and intimacy and presence in vocals. It's a shame you cant source slate easily in Japan, how about marble?
Lewm
I wanted this plinth to have a smaller footprint than the Denon DK300 plinth, which was hanging over the edges of my rack, I was looking for something a little more compact, although in hindsight I wish I had left a bit more room to try a 12" arm in the future. I need to source a bespoke acrylic / perspex cover for it now, to sit on top. Interesting concoction you have there for sealing your slate, it's a beautiful material isn't it...even if it is just compacted mud, but it scratches so damn easily though. Yes this slab is very heavy indeed, I can hear the rack groan when I first heaved it up there.
Lewn I and Im sure others here would love to see some pics of your effort, especially with those tremendous arms you have lined up for it. Ill post some more in a few days.
Thanks all