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In Reply to: RE: Idler Drive Plinth Question posted by JRags on May 21, 2012 at 12:07:29
I have to disagree with the above comment about cutting slate,if you look on LencoHeaven plenty of people have cut plinths using angle grinders or even ceramic saws.
Drilling holes is also pretty easy in slate. In general if you make a mistake you can always refill the hole with adhesive mixed with powedered slate and when its hardened just have another go.
There's also good arguments about using some of the new super adhesives and just glueing the tonearm or plinth directly to the slate plinth.
In my experince so far I have built a multi layered plywood plinth and it was probably harder work than making a slate plinth.
Follow Ups:
Your definition of "pretty easy" must be way different from mine.
In pursuit of drilling holes in my slate plinths, I tried many different types of bits, since one cannot go into a hardware store and ask for a bit made to drill slate. (Or, one can ask, if one does not mind a look of consternation from a salesman.) After spending a fair amount of money on bits that looked good for the job and proved worthless, I did finally identify one particular company whose bits seem to work "fine". (I can get the name for anyone here who is interested. I think it's ATR.) But even then it requires the patience of Job as you wait for the drill to make headway in the slate. Plus the dust created is pretty awful; do it outside or in your garage. Plus the hole is very apt to be wider in diameter than what you intended, due to crumbling of the slate at the edges of where the bit is working. Allow for that.
Yes, I too have seen on Lenco Heaven that several guys have managed also to cut slate with various tools. Here's what I did; I first ordered my slabs to be honed on both sides so as to create plane parallel and completely flat surfaces. Then I had the slate cut by a water-jet company. IMO, that's the only way to get perfect (or near-perfect) results. Of course, to do that you need either to have a pdf file to program the water-jet or to create one to suit your needs. I found a really good programmer who could work with me to create the necessary files. The water jet work cost no more than a few hundred dollars per plinth and was well worth it.
I don't know if this will work on slate - it does on marble. Just build a plasticine dam around the area where the hole will be drilled and fill it with water
Doug
Your idea kind of recapitulates the method of the water-jet.
My idea is that, after having "made" four slate plinths (for Lenco, SP10 Mk2, SP10 Mk3, and Denon DP80), never to do it again. I thoroughly scratched that itch.
I use modeling clay. You will save on bits by keeping water on the slate. In fact, all slate work should be done with wet stone.
I completely agree. A water-jet is the right tool for the job. If you can program your design to direct it that's even better.Unfortunately, I just did not have the resources to go this route. But as Mosin indicates there are many ways to get the sound you want through design materials and parameters.
I am very happy with what I determined was best for my situation. And I enjoyed the path to get there.
JRags
"Always Searching for Perfection"
Edits: 05/21/12
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