Skeletal vs Plinth style turntables

Hi CT0517
Hijack the thread all you like - ;)
You said a few interesting things about the Platine, because the base is very much made of a similar material, by the sound of it, as the Technics Obsidian Bases or the Sony Reisinamic Plinths - both of which use 'resins and stones'.
Likewise Townshend Audio used to use Plaster of Paris.
I have to say I auditioned a Platine, and at the time I was not seduced by its charms - I found it a bit too warm for my tastes. That said - I am not knocking what floats your boat.
With regards to filling in the SP10 - Can I just suggest that you are a bit careful - why not try some lightweight damping such as acoustic foam first of all - what frequencies are you trying to damp?

Hi Chris,

Glad to see you're off the DIY and enjoying the music...as Raul used to say?
Here is a 'suspended' nude Victor TT-81 design using the same idea as your coupling 'plinth'.
It all depends on what one 'means' by a plinth?
If an added shelf sitting on a shelf qualifies as a plinth....well, that's exactly how a turntable plinth acts.
If one removes the 'added' shelf (plinth)....could someone please explain the differences to the mechanical and structural functionalities?
I do appreciate the added 'warm and fuzzy' feeling this can impart together with the ability to mechanically fix the tonearm pods if their weight is insufficient....but apart from that...👀❓

Thought I might just share this image of a cutter on a 'shelf'....?
I think the emphasis on the mass and fixity of the cutter arm compared to the platter shares the thoughts on my Copernican view of the turntable system?

Dgarretson,
The big Micro SX-5000/8000 turntables are well respected but I've never been a fan of their arm-board cantilevered mounting systems.
Here is an example of a DIY project using the Micro system.
The structural integrity of the armboards fixed onto stainless steel poles via friction becomes less and less convincing the longer the cantilever becomes to support 12" arms.
The flexural micro movements in the armboards increase according to the square of the distance of the cantilever whereas there are no deviations in a mass-loaded fully supported armpod.
The fact that these (and others like them e.g. Raven) work....is perhaps an indication that actual micro-movements are still too tiny to be destructive..?
However....like my mate Lew....I just don't like the 'theory'...😎👀

Halcro, having bushwacked a VPI TNT through flywheel, thread drive with custom pulley assemblies to minimize belt creep, and a Mark Kelly AC-1 two-phase controller, I conclude from experience that that way lies madness relative to DD. IMO there are greater evils admitted through quadraphonic rubber belts than by heroically built cantilevered tonearm boards.