Needing To Order Turntable Feet. Looking For Options and Experiences

For items that do not store energy dead balls can be a really good place to start.

As far as user adjust-ability they are not top of the list but well worth the hassle for the performance they can deliver when directly supporting a TT. The curve of the ball also helps in horizontal stability this can be  something spring loaded footers often struggle with when you have a really heavy TT placed on them.

Like many others here I prefer splitting the stand duties into two, a sturdy well made base stand for a DIY mass loaded sub plinth to placed on. If you level everything as you go the need for highly adjustable TT feet greatly diminishes. Cheers!

https://www.amazon.com/Enjoyer-Tricks-So-Routines-Possible-Magician/

Neon and Pindac, yes, the Neuance shelf is what I had in mind when I saw the thick black styrofoam slabs at the waterjet business. They had just received some heavy but fragile equipment and the styrofoam had been used for protection. They had many large slabs of it, and gave me as much as I could want. I have to think the stuff may be more rigid and tightly packed than whatever ken lyons used for the Neuance because it supports the weight of very heavy TTs without any external help. It’s also at least 3 inches thick, much thicker than the Neuance. With that under my TTs, I just use any old feet, as the styrofoam itself is doing the work. I also use it under electronics.

@mads1 

you are right of course, wood or any solid by itself isn't a good choice. My mind just assumes isoblocks under anything as my wood floors are springy.

I got lost thinking about matching wood for mine to replace the JVC OEM ugly plastic feet on mine which have 2" x 2" isoblocks under them (shown in my 1st post above).

I also forgot OP had a custom plinth made, and no cables underneath. I visualized OEM Denon: wood like mine.

@lewm stated.

“Therefore does not store energy.“

I take this claim with a pinch of salt as there is presumption  only. Mearured performance is much better a guide.

pindac  stated “ I have used densities where compression has resulted in foam at 700Kg/m3. 

I have no issues with foam that has structure to take weight used neat or sandwiched. 

You don’t understand.