concrete (cinder) block tower with wood chopping block for turntable stand

Anything that is Skeletal in appearance, will be a harder sell to others if not wearing a pleasing aesthetic Jacket.

There is a honesty to such a structure as under discussion, and if wanted to be a keeper, the very basic appearance, can very easily be concealed. It is really down to how much cost os wanted, and whether meeting such a cost, will then create a situation where the cost, will enter into the area where other options are also able to be considered, and certainly be a sellable item when no longer used.   

@kingharold , if it's mass & weight in wood, I can recommend locust (rubinia), any variety...and given the thought I just might give it a go..*G*

I end up with short but large diameter chunks and some slab (3"+) 'drops' that have to be moved with a hand truck...

Laughs @ carbide....even dried, it's worse than the monoblock from hell...

Pre-drill or strip the head of fasteners....Snaps lag screws where the threads end if you don't.   Only recourse is to grind it flush.

@lanx0003 

Exactly! Skip the project and just buy a nice rack!

@tonywinga Not something I do when listening. It sounds so much better than previous wood and metal stands. 

If you tap on the cinder or concrete blocks with a hammer

I have used a tubular steel Sound Organisation stand with my Linn Sondek for 40 years. No complaints about bounciness or ringing. 
The ton of bricks solutions seems like overkill to me.