Interesting... I couldn't see these rocking due to the sheer weight of each block. These are 16 " front to back (DEEP), 8" wide, and 8" tall. Each block must have weighed near 40 Lbs. Not so much out of necessity, but more about not being very impressed with sub $1000 3 shelf single wide racks. It's a second system with a budget, and I don't want to spend over $2K on a rack. But if I was to do that it would be a Box Furniture modular rack.
concrete (cinder) block tower with wood chopping block for turntable stand
Any suggestions from users who have done, or contemplate doing this. I looked at concrete blocks at Lowes last night. I made two stacks of 3 side by side, plus a solid block (without the center openings) as the top block. This gave me about 34" in height. Then the thought is either a Walnut or Bamboo chopping board for a top shelf. I would use four cork or cork/rubber sandwich (2"X 2") squares to couple the wood chopping block to the concrete tower. I am also considering an Isoacoustics platform as a more expensive alternative. Fire away....?