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Bracewood for classical
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=49803		 Page 2 of 2
Author:  WilliamS [ Thu Oct 19, 2017 6:50 pm ]
Post subject:  Re: Bracewood for classical
Marn99 wrote:
I assumed it would be a good idea considering the Robert O'Brien kit from LMII uses Western Red bracing for the back.


I thought this sounded a little odd so I checked it out. He uses Spanish cedar for the back braces in his kit, which isn't all that uncommon for classicals.
Author:  mqbernardo [ Fri Oct 20, 2017 8:12 am ]
Post subject:  Re: Bracewood for classical
ok. that makes sense.
Author:  Freeman [ Fri Oct 20, 2017 10:54 am ]
Post subject:  Re: Bracewood for classical
WilliamS wrote:
Marn99 wrote:
I assumed it would be a good idea considering the Robert O'Brien kit from LMII uses Western Red bracing for the back.


I thought this sounded a little odd so I checked it out. He uses Spanish cedar for the back braces in his kit, which isn't all that uncommon for classicals.


LMII's kits are excellent and with their wizard you can customize it any way you want - including having certain services done that you might not be ready to take on (thicknessing plates, inletting the rosette, bending sides... Everything required will be in the box. Benjamin might want to consider that option instead of trying to source a lot of materials for a lot of different vendors. This is a LMII classical kit

Image
Author:  Alan Carruth [ Fri Oct 20, 2017 12:02 pm ]
Post subject:  Re: Bracewood for classical
Around here (New England) the framing stock is all labeled 'S-P-F', which means 'Spruce-Pine-Fir'. Most of it comes from Canada. Any of those would be useful for bracing. I've tested enough samples of all of them that I'm pretty convinced that the Young's modulus along the grain relates to the density in the same way for all of them. Since it's the Young's modulus that determines the stiffness at a given thickness/brace height, they're all pretty much interchangeable. If you want to avoid pine for whatever reason, look for wood that doesn't have noticeable resin canals. Most of the framing stock I see looks like White spruce or Engelmann, but that's just a guess; I'm told that even an expert with a microscope can't really tell them apart. It could be Red spruce for all I know. Happy hunting.
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