Why Use Aluminum for a TT Platter?

Viridian thanks for the trademark education but Michell platters are Carbon infused acrylic that DO contain Vynil.
Cheers

"Belt drives...in terms of speed accuracy, are clearly inferior to properly implemented direct drive tables."

Humm, proof, evidence to back this up?

Nothing cogs like a DD. The mass of the platter has nothing to do with flywheel inertia.

I just know in direct comparisons in the same system between VPI tables: Aries 3, Aries 1, Classic 1, and Classic 2 it appeared consistently whether with or without a mat that the new aluminum VPI platters ring like a bell compared to the VPI super platter and acrylic platters. Resonance, noise, and brightness were in abundance compared to the others.

Let me restate that. ;-) The mass is not there for inertia.

That flywheel affect that folks like to think about when high mass platters are mentioned with belt drives would only matter when the platter is accelerating or decelerating. Once the platter is up to speed the mass would make any sudden changes in platter speed near impossible.

This is also why so many DD tables have light-weight platters. The motor on a DD is designed to directly manipulate the platter in order to correct speed. The platter is supposed to have it's acceleration constantly manipulated.