2020 update : JC Verdier La Platine

@mr_gray I today usually put the description " Resin Impregnated Densified Wood Board Material " This will help with the search and Brands that are equivalents to Panzerholz and Permali will be found.

The Material is as said above, It will be Vacuum Impregnated in a Heated Environment.

The Board will weight approx' 1400Kg/m3

The minimum wanted as a Structure is 50 x 1mm Veneers per inch thickness at a compression of 50%

Veneers are laid as a Cross Grain.

There are Boards from Brands that increase the Veneers per inch by using less than 1mm. This to myself has increased attraction, as does Grain orientation with more angulation than 90 degrees. Again there are a few Brands that seemingly offer added angulation for the Veneers grain.    

I should have also stated that RIDWB is used today by TT Producers with a Broad Market Exposure.

It is used as a material by Bespoke TT Plinth Producers.

It is offered as Sub Plinth and Casing for Audio Devices by other Brands. 

Speaker Producers also use it as well. 

Within Forums it has a growing number who have adopted the material for nearly 20 Years, where it has been the superseded of most materials that has been used for Plinths both Commercial and DIY. 

Considering or Adopting this Material is a route to a betterment, increasing the presence by having  Sub-Plinths adds to the good impression made. 

My experiences suggest the discoveries made will be profound as  a positive impression made.

A member of another forum who has done extensive work with a DD TT, had over the years abandoned their work with Plinths and had become a total advocate of a DIY Resin Plinth, where they also created a following of others adopting same plinth design methods. 

A same DD TT ended up near their home, but was supplied to the owner with a Panzerholz Plinth. 

After being introduced to the TT, the advocate of a DIY Resin Plinth, bought Permali Board and Resin Plinths are yesterdays news.

A good friend of mine is a plywood manufacturer and supplier. The highest grade plywood he produces is known as ‘ Finnish plywood’, density around 680 kg / m3. He produced an even denser Fin Ply for a Japanese client who uses it for the innards of the arcade machine Pachinko. I asked him about Panzerholz which he was not initially aware of. After some research, he commented that  it is a very sophisticated version of Finnish ply. Certainly at 1400 kg / m3, it is more than twice as dense and heavier than Fin Ply.  But there are audio manufacturers who use Fin Ply. The Wand TT has a Fin Ply plinth. 
 
@mr_gray Would you PM me  regarding details of Galibier’s motor, pricing, delivery date …etc. Thanks!

@ledoux1238 i surely will.  right now Mr Mackris is saying the standard unit will be 5.2 inches high (~ 130 mm) and cost is $3,750 USD.  He intends to offer us La Platine people an extension that the motor can sit on as i need 180 mm or so.  

Further details to follow.  He tells me the parts will be machined in 4 weeks and from there assembly will begin I'd presume.

re: motors my sense of things now is:

1. my Verdier DC motor was a bit worn out i think.

2.  the new AC motor sounds fabulous partly because by DC motor was "poorly".  so strong!

3.  however once that wonderful tempo and huge deep soundstage is heard and one grows accustomed, one can hear some slight "woolliness".  Not alot and things are quite fabulous but a tiny bit.  

4.  it is plausible i am hearing "cogging", i.e. it is this inconstancy of torque that creates this "woolliness"

5.  i see online  DC motor is preferred for least noise - i found this puzzling until i realised that my personal DC motor on the la platine being the only example of DC motor i know of is the issue there.

6.  it would be fun to now try the origin replacement motor solution (or the SOTA) and see how healthy newish DC compares with the AC but i think i will leave that to Galibier and focus on my knitting for now.

@mr_gray 

Not having tried a AC motor, I cannot comment on its merits. But based on your reporting on AC motor, the  three phase SOTA AC motor was on the top of my list as replacement. 
I also think one critical aspect is the coupling of the belt / thread to the platter. On this thread, and several others I have read, there seemed to be a consensus of applying a loose coupling of belt to platter with the La Platine. The idea is to allow just enough force to allow the momentum of the heavy platter to maintain consistent rotation. However, my last experience using a very tight coupling of belt to a rather generic Jasmine DC motor yielded sonic benefits that I never got with the loosely applied thread belt. This leads me to think that using a tape thread with  more contact surface  to the platter and a tight coupling is in fact the way to go, regardless of the type of motor used. This gives the nod to Galibier’s motor system. And round and round I go arguing between the SOTA and Galibier motors.