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Martin 0-12 top http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=27314 |
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Author: | ChuckB [ Sun May 09, 2010 7:27 am ] |
Post subject: | Re: Martin 0-12 top |
Fillipo, I just finished a 0 size 14 fret with a larch top. The top was very stiff also, as stiff as some adi I have used. I had similar concerns. My top thickness ended up at .090 with light sitka bracing. Right off the bench, the bass was better than I expected and well balanced overall. If interested, could check my notes on the heidhts of the braces, remember this is a 14 fret. Chuck |
Author: | bluescreek [ Sun May 09, 2010 7:34 am ] |
Post subject: | Re: Martin 0-12 top |
I agree .090 to .095 with standard bracing. I would not go below .250 on bracing width. You should have a 3 5/8 sound hole |
Author: | ChuckB [ Sun May 09, 2010 8:47 am ] |
Post subject: | Re: Martin 0-12 top |
Filippo, The X braces are .250 wide, .590 high at X intersection, .1875 (3/16") at lowes point on X scallop. Tone bars are 5/16" at highest point, scallopped to 1/8" and .200" wide. Some 0 size have only one tone bar, most 14 fret that I saw on UMGF had two, so I went with that. Finish thickness of top is .090". Here are pics of bracing. Chuck |
Author: | ChuckB [ Sun May 09, 2010 8:55 am ] |
Post subject: | Re: Martin 0-12 top |
And, 3 5/8" soundhole is normal as John said, but I went to 3 13/16" for a little more room in case I need to get inside later. Thanks for looking, Chuck |
Author: | Laurent Brondel [ Sun May 09, 2010 11:01 am ] |
Post subject: | Re: Martin 0-12 top |
I'm building two B-4s (similar to a 12 fret 0) at the moment, both with red spruce tops, and both ended up at .103". Bracing is red spruce, but I've used sitka successfully. Here's a pic of the first one. I use a 4" soundhole. |
Author: | Laurent Brondel [ Sun May 09, 2010 4:18 pm ] |
Post subject: | Re: Martin 0-12 top |
Filippo Morelli wrote: Do you end up with thinner bracing with a thicker top? Well, I don't consider .103 to be thick⦠For small guitars I use .250" braces except for finger braces that are .200" and the UTB .625". But yes, the braces are relatively low and thinly profiled.EDIT: I forgot to add that I sand the lower bout perimeter after the box is closed. It's a bit different for every guitar, but the edge of the lower bout can end up being around .075". |
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