A Copernican View of the Turntable System

Dear Geoch, 'life is to short' but it is never to late to learn. So as soon as I get my engeneering degree I will
respond to the 'demping question'. Meanwhile you can direct
your inquisitive mind to Vidmantas and ask any question about cork you like (Ruta@reed.lt or Vidmantas@reed.lt).
I am very reluctant to ask Halcro to bring some 'light'
in this 'mass matter' because I think that he is angry at
me.
Regards,

As I understood the manual, any armboard will do. Part of it will be drilled onto the pod and the part with the larger hole where the tonearm mounts into would protrude beyond the dimensions of the pod itself. So, this would be different than Ct0517's set up but would still work for pivoted arms. In fact, that's what I did the first go around, but instead of using a metal foundation, I used red oak.

My current pods are similar to Halcro's; but, sadly, far less cool looking.

Hi Chris, I think the decoupling offered by the wood plate is a very drastic solution, applied in desperate situations. My concern is about the strength & tightness of the surface that couples the arm pillar with the arm pod.
I'm sure it works OK, but from the theoritical point of view, I would be more comfortable if you choose a more solid upper fixed point, in order to modify the ET arm pillar, as if it is one piece with the first block of the arm pod. Even if it is applied at the bottom* (the decoupling by wood), may not be necessary -in your case- considering there is a film of air in between the arm tube & the arm pillar.
* Steel at the top plate, your own Al main block, Brass as a foundation or intermediate level. Especially the discs that rests the spikes must have great hardness. You can close the microscopic open moleculars between the metal surfaces simply by applying some silicone oil without bonding or bolts. Easy if you uplevel your main wood shelf with a second & preferably denser platform only for the TT and so, you will have the apparent hight for steel, brass & discs. Just a thought.

Dear Nandric,
I'm certainly not angry with you :-)
A little disappointed that you didn't understand my sense of humour about your 'Australia' remark which I found very funny :-)........so I thought you took offence?
I hope we're 'cool'?
Regards
Henry

High Density & CLARITY are BFF