Garrard 301 - Project

I use a  AT Record Center Weight on my JVC TT81, weights 70 grams

https://www.amazon.com/Audio-Technica-AT618A-AT618a-Disc-Stabilizer/dp/B07HB2LDYT?th=1

One lightweight solution is to use a rubber reel holder, they grip the spindle, hold down without weight, they are a good choice for the Luxman Turntables with the DD Motor that uses it’s motor’s magnetics to repell/reduce 80% of the platter weight off it's bearing

https://www.ebay.com/sch/i.html?_nkw=reel+holders&_sacat=0&_from=R40&_trksid=p2553889.m570.l1313

@elliottbnewcombjr 

It’s all good. And yes, the isolation issue was resolved long ago with Daruma Isolation blocks on my DAS plinth. Since then, I’ve ordered Woodsong plinth and it should be delivered in next couple of weeks or so. As per Chris @woodsong, this plinth is his best work yet..I can hardly wait to see how his plinth elevates performance of my 301. 

Chris’s plinths are known for their craftsmanship—densely layered materials, resonance control, and that organic finish that makes them look as good as they sound.

The Image shows the Blue Foam Sandwich, where as the Link shows the Cork Sandwich.

I have has had the Blue Foam Sandwich as a Pad with a dimension up to 12" x 12" and have used them in very similar size as per the image.

The Blue Foam in my environment used on my Support System never added anything to suggest there was a valuable and wanted to be kept influence.

I find that Cork, not Cork Sandwiched in Rubber has a notable influence on End Sound in my set up. I use Cork at numerous interfaces as a single material or as a part of a build up of different materials. 

Getting the very best out of Japanese Vintage TT's as a route through creating different Plinths, has substantial results created when the Board Material selected is a Resin Impregnated Densified Wood Board.     ; 

Some (JVC and others) Plinths are simply composite wood chips and glue with veneer, some are simply a tall frame with a thinner top layer, like that joke of a multi-layered thingy Linn is passing off, see the 3rd photo from below

https://www.paragonsns.com/products/linn-bedrok-plinth?srsltid=AfmBOorUbGXuPhinVLB6eV7NgyfGVtdFWqLHYpzdyj-NPEYdOD8A3Zgg

and some are thick with cutouts which is what I think of as a Plinth. 

The 7 layer plinths, CL-P1; CL-P2 (mine with two removable arm boards); CL-P3 (my friend’s with three removable arm boards) are solid 59mm thick plinths with cutouts, 4 layers of composite wood chips/glue and 3 layers of some compound, with real wood veneer with a finish coating (Linn should be ashamed)

I wonder how it would measure/compare to Panzerholz and Permali in the link you posted elsewhere

https://www.tapatalk.com/groups/audioqualia/damping-factor-values-t29.html#google_vignette

blue foam, cork, a blue foam/rubber isolation sandwich worked!

I suspect the cork might have worked also, it really is a trial and error.

I sometimes wish I still had my Thorens TD124 in this new location with these isolaton blocks,

but the JVC plinth is quite different than what I was given, and TT81’s bearing is nothing like the Thorens bearing which is known to transmit vertical motion. The Garrard bearing is probably similar to the Thorens which is why OP needed his isolation blocks for the final thing that worked.