Rich,
Size of hole is 5/8 inch under the carpet, you can barely see the holes, and they are covered by the rack.
Rack weighs about 100 pounds and the turntable approaches 100 pounds as well. I had planned on putting a slab of granite on the bottom rack to help keep the weight low and not have so much weight at the top. so we are looking at maybe 300 plus pounds all together. My amp sits on the floor.
I like the stainless steel idea with the nuts for strength.
I was thinking it would be good for the spikes to sinki nto the wood, is this a bad idea?
And Martin the wood was an experiment, I guess as the seasons change I may experience some falling supports as some increase in size and others get loose. It was just a crazy idea I wanted to try, I just didn't want to spend $300 on lolly columns just in case it was a waste of time
But you are right I did not think of the atmosphere changes.
Under the rack is pressure treeated 4x4 which should not deform too much, but what do I know.
mike