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How this is too thin??
http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10102&t=535		 Page 1 of 1
Author:  Sprockett [ Wed Dec 29, 2004 6:19 am ]
Post subject: 
Ok so to get things started on the new system (love it by the way) ...

I was working on a new top yesterday for a classical and after final thicknessing on the performax ended up with a top that was 2.3mm even , seems a little too thin. The top still rings but at a lower note, Haven't added bracing yet (it's been raining outside), so I'm wondering if I should go ahead and just finish the thing and see what happens.

The Hauser plans say that the *average* is 2.3, 2.5 at the thickest and 1.8 at the thinnest but I'm sure that's with a very stiff top, this one is englemann and isn't the stiffest top I've seen (it's nice though).

Comments?

Thanks

-Paul-
Author:  Dickey [ Wed Dec 29, 2004 6:32 am ]
Post subject: 
.110 to .120 sounds right to me... bd what is the humigity in the shoP?
Author:  Sprockett [ Wed Dec 29, 2004 8:12 am ]
Post subject: 
That's about 0.0906 when converted to inches so it's pretty thin, on steel strings I start at .120 to .130 on average and then work down from there by hand once the top is braced (until I get the tap tone I want). I know classicals don't have as much pull on the top, but it still bothers me a bit. I'm going to brace it up and see how it sounds after that.

The shop is around %53 rh right now, I like to have it around 45-48 for gluing, the house is %51 so even it's not down far enough yet .

-Paul-
Author:  Dave-SKG [ Wed Dec 29, 2004 11:14 am ]
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51% is most uncommon down here in Florida. I run the Air Cond. day and night( in the House) and it rarely gets down to 65% So I bought a Dehumidifier and I am emptying the bucket ever other day. Finally got it down to 50% some times a little less ( in the living room where my wood is stickered). But that's a big problem for me Local wise. I build or work on a guitar and these guys go out into 90% humidity(normal) then into an airconditioned club still at about 65%RH and the guitars expand. My shop is always around 40-45% thanks to the A/C and or heater. But once these Fl boys get their guitars they almost never see that dry air again. I have started exposing some of them to get exposure and then adjust for it.
Author:  Dave-SKG [ Wed Dec 29, 2004 11:18 am ]
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But back to the thickness thing...I think your o.k. rmember the specs we all get from plans are for (usually) factory made Martins/taylors/ whatever. Most of those are over built because of warrantee issues. I was in Cancun a few years ago and got a chance to examine quite a few flamncos and classicals all were built very thin and the owners didn't expect them to last much more than five or so years.They were Built almost to failure.
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