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bob J
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PostPosted: Sat Jan 13, 2007 2:13 am 
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Koa
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Joined: Sat Feb 12, 2005 6:20 am
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First name: Bob
Last Name: Johnson
City: Denver
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Country: USA
Focus: Build
Status: Amateur
I desire to remove a back and am wondering at what temp. does the LMI glue break loose?
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Rod True
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PostPosted: Sat Jan 13, 2007 2:21 am 
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Location: Abbotsford, BC Canada
Most glues seam to soften again at around 150-170*F. One thing you want to be careful of is drying out the wood to much and prying at it with the removal blade/knife. I've taken a few backs off and also a few neck and tail blocks off and found that just a bit of water on a rag will keep the wood moist enough as to not crack or split, this will also of course create some steam which will help soften the glue too.

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crazymanmichael
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PostPosted: Sat Jan 13, 2007 2:28 am 
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Brazilian Rosewood
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good advice from rod. also make sure you don't try to lever the wood to break the glue join. use putty knives or pallette knives which have been ground thin on your belt sander or grinder and slip them between the wood, leapfrogging them so as not to allow the glue to reset.crazymanmichael39095.7501273148
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bob J
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PostPosted: Sat Jan 13, 2007 2:33 am 
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Great! Just what I needed to know


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Louis Freilicher
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PostPosted: Sat Jan 13, 2007 9:45 am 
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There is some great info on making seam separating knives at frets.com.

http://www.frets.com/FRETSPages/Luthier/Tools/JointKnife/joi ntknife.html

Louis
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crazymanmichael
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PostPosted: Sat Jan 13, 2007 10:00 am 
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Brazilian Rosewood
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what had you planned to use to provide the necessary heat?
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RCoates
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PostPosted: Sat Jan 13, 2007 12:21 pm 
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[QUOTE=crazymanmichael] what had you planned to use to provide the necessary heat?[/QUOTE]

The wife's iron works pretty good. Good enough in fact, that she now has a new one and I have the old one permanently assigned to shop duties. I've removed a few fingerboards and one back and one headplate with it.
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bob J
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PostPosted: Mon Jan 15, 2007 12:59 am 
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Koa
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City: Denver
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Michael, and others,
I too used a clothes iron, set it to linen, about 5 very damp tea towel layers between wood, let it steam about 15-20 secs. and voila.
Thanks,
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crazymanmichael
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PostPosted: Mon Jan 15, 2007 2:28 am 
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Brazilian Rosewood
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glad things worked out well for you.
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