Using Maple Butcher Block Under a Turntable


When using a maple butcher block under a turntable, what is below the butcher block?  Cone?  Soborthane pucks?  Does it just lay on the shelf?  What are people using and how of they mounting the block?  How are they mounting the table on the butcher block?
bpoletti
As for hardness, I have the Butcher Block Acoustics end-grain 3" Maple block, and they rate it 1450 on the Janka scale. I am using it under a ~40 lb Clearaudio Ovation (with 2350 gr of clamp and outer limit ring).
dwette with that Janka scale rating it would be hard maple. I sell hardwood lumber and was just curious what the preferred type seemed to be. Thanks for the input.

blueranger ambrosia maple is almost always soft maple (Red or silver).  I have never seen hard maple with Ambrosia beetle damage before, only Red Maple.  I have sold hardwood lumber since 2000, but I guess anything is possible in mother nature.
When buying Butcher Block....make sure it looks like a checkerboard with the grain going in different directions.