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DIY turntable plinth material

I have a spare VPI super platter/spindle, thinking of building a TT out of it.

I have some materials in mind

I have a spare BDR shelf that I can use, but its difficult to work with and will only consider if it offers significant performance upgrade.

I can have acrylic or MDF cut to any shape, both are easy to work with. I once had a 400lb granite but I can't possibly imagine using it due to the size and weight.

I assume a mixture of different materials should offer the best performance, wondering what do people use to build their TT?
semi
pbnaudio's avatar
pbnaudio
1,610 posts
 
Turntable Plinth
ptmconsulting
1,000 posts
 
Try contactiung a kitchen counter fabricatioin place and see if they have any Corian sink cutouts. Corian is very dense and resonant free (any heavy), and it comes in many styles and colors.

Check out my systems page for a DIY using VPI platter, bearing and motor and a Corian plinth (Apogees in the House)

Enjoy,
Bob
bpoletti
1,533 posts
 
I've been curious about Corian. Is it easily worked like wood or MDF? Looking for a possible alternative to the acrylic plinth I'm using now. How does it sound compared to the VPI plinths?
manitunc
795 posts
 
try a slab of Delrin. Very machineable and non resonant. expensive though in 2" thickness.
semi OP
649 posts
 
We have slate, corian, Delrin, and wood. PBN wood plinth looks too raw, but slate or corian will probably look un-proportional since plinth will look much thinner than VPI super platter which is nearly 2" thick.

I read an article comparing plinth material based on mechanical properties like stiffness, damping factor, and resonance freq. Acrylic seems to be the most ideal material, but reality is acrylic plinth is too dead sounding and many manufactures have moved away from acrylic plinth. I know I ant some wood in the plinth, but if corian or delrin is better, I don't mind giving either a try.
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