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Back Joint Reinforcement http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10102&t=10770 |
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Author: | Jim Watts [ Mon Feb 05, 2007 4:43 pm ] |
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Anyone out there use a cut off from the waste of back wood (oriented correctly of course) for their back reinforcement strip? I typically use spruce or spanish cedar for these, but for some reason I was thinking of this. Good idea or bad idea? |
Author: | Dave White [ Mon Feb 05, 2007 7:00 pm ] |
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Jim, Yes. It works fine. |
Author: | JohnAbercrombie [ Mon Feb 05, 2007 7:16 pm ] |
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Thats a pretty standard source for backstrips, I think. A lot of standard-size topsets seem to be quite oversize on length anyway. I usually manage to find 'below standard' topwood somewhere in the junk pile. You can rip up (and bevel?) enough strips to last quite a while, and it makes things easier if you glue up a bit wider blank before you rip it up. Or, like Larrivee, you can skip the backstrip.... John |
Author: | Serge Poirier [ Tue Feb 06, 2007 10:28 am ] |
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Jim, i also did this on no 3, i took some left over pieces from the WRC off cuts and it kind of look nice inside the ash box. Here, have a peek through the soundhole ![]() |
Author: | Serge Poirier [ Tue Feb 06, 2007 10:29 am ] |
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OOOPS, misread, i thought you said off of the top, sorry Jim! ![]() |
Author: | JohnAbercrombie [ Tue Feb 06, 2007 11:50 am ] |
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Serge- Obviously I didn't read the question carefully either...OOps all around. Jim- to answer your question, not what I imagined.... Some of the mahoganies or walnut would be ok to work cross-grain, but I have enough trouble with the more exotic back woods that I've never thought of making say a RW backstrip. The softer woods sand so easily that it simplifies things. And, if you are a gram counter, I suppose softwood strips are lighter as well. But, it would look sharp. Let us know how it goes! John |
Author: | Jim Watts [ Tue Feb 06, 2007 12:45 pm ] |
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Yes, I think maybe I wasn't very clear in my original post, sorry about that. The question does concern hardwood back strips, I'm glad people picked up on it, i.e. rosewood strip on a rosewood back. I just don't remember seeing this and was wondering if I was missing something obvious on why it shouldn't be done. I also like the look of spruce or spanish cedar for back strips though. |
Author: | Terry Stowell [ Tue Feb 06, 2007 12:57 pm ] |
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I just got an order from LMI and the spruce strips were too rough to use. So I cut off two strips off the back, glued one reinforcement strip to the back, and saved the other for another guitar. I made it perfectly 3/4" wide on my router table. Then I ran it through twice again with a chamfer bit for a gorgeous very clean, no sanding finish. I'm throwing those other spruce ones in the trash. Looks like they were cut with a chainsaw there was so much tearout! |
Author: | Dave White [ Tue Feb 06, 2007 6:50 pm ] |
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Jim, They work fine - the cross grain patterns look funky. Here's an EIR one I did a year or two back: ![]() |
Author: | Andy Matthews [ Tue Feb 06, 2007 10:16 pm ] |
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What width do you guys make your re-enforcement strips? I've learnt 6mm either side of the outermost joint (so if you've got a centre strip, they're a little wider) is what to shoot for. Thoughts? |
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