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In Reply to: Thorens pic of the day posted by user510 on May 10, 2007 at 01:01:35:
Impressive stuff as always Steve. Those 3D renderings do look professional. So slate is "the thing" these days in materials for TT plinths. I'm really getting curious now. May i ask what you paid for the material and work? I presume you can't cut this stuff with average tools. Good description of the idler wheel sound. When the slate plinth really lowers the noise floor to Teres standards we're really getting in the ballpark with our old idlers.
"The torture never stops"
Follow Ups:
It sands well, drills relatively easily (use some water, a low speed and gentle pressure) using a tile drill bit and saws magnificently with a hacksaw.Treat it as a very, very, very hard wood, or a soft metal, and you wont go far wrong. Yes you'll blunt blades, but you wont be spending 00's getting it machined by some-one else.
To get the top or bottom flat - glue some wet and dry paper to a piece of thick float glass. A trickle of water, and a long slow afternoon pushing the slab about should see it done nicely.
Dont use oil until you are sure that an oil based finish is what you're after - Slate is very slightly porous, and will stain.
Hi Freek.
Thanks for those kind comments, as always.
Slate, as a turntable support material, is getting some notice these days, and rightfully so. A rigid, densely layered mass that doesn't ring. An optimal plinth material. The problem with it is that it's not an ideal "diy" type of material,.The slate quarries use --huge-- industrial-strength circular saws with diamond inserts to cut their product into manageable chunks. The internal contours were then cut via cnc water-jet based on a cad file that I provided to the water-jet guys. Hiring that kind of work isn't cheap. I can't reveal costs but as you can imagine they are "industrial-strength" too. More about that later.
However the results are really impressive.
Of course, the deck was brought back into a state of mechanical integrity before any of this plinth-listening business started. With it standing on the old weathered Thorens rubber mushrooms in its plywood box plinth the deck was also quiet enough for serious listening. It's like I really had to listen for any background noise in order to discover it....and it was faint even then. Now in the slate, it's quiet as any TT I've had.
At this point I have the Teres sidelined against an adjacent wall in the listening room It looks lonely.
-Steve
btw, you're right. The torture never stops... ;-)
I googled around a bit, found out a CNC waterjet machine is 100,000 Euro easily, phew! I'll have to find a company here in Holland willing and able to work on a slab of slate for me. The Uk company charges about 750 euro for a single 30 mm slate Lenco plinth, alas that's out of my budget.
"The torture never stops"Greetings Freek.
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