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PostPosted: Sat Jan 13, 2007 2:13 am 
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Koa
Koa

Joined: Sat Feb 12, 2005 6:20 am
Posts: 1437
First name: Bob
Last Name: Johnson
City: Denver
State: CO.
Zip/Postal Code: 80224
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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 Post subject:
PostPosted: Sat Jan 13, 2007 2:21 am 
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Contributing Member
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Joined: Tue Jan 04, 2005 10:03 am
Posts: 6680
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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 Post subject:
PostPosted: Sat Jan 13, 2007 2:28 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Feb 21, 2005 6:16 am
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Location: United States
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Last Name: mcclain
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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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 Post subject:
PostPosted: Sat Jan 13, 2007 2:33 am 
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Koa
Koa

Joined: Sat Feb 12, 2005 6:20 am
Posts: 1437
First name: Bob
Last Name: Johnson
City: Denver
State: CO.
Zip/Postal Code: 80224
Country: USA
Focus: Build
Status: Amateur
Great! Just what I needed to know


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 Post subject:
PostPosted: Sat Jan 13, 2007 9:45 am 
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Cocobolo
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Joined: Fri Mar 31, 2006 6:11 pm
Posts: 296
Location: United States
First name: Louis
Last Name: Freilicher
City: Belchertown
State: MA
Zip/Postal Code: 01007
Country: USA
Focus: Repair
Status: Professional
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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 Post subject:
PostPosted: Sat Jan 13, 2007 10:00 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Feb 21, 2005 6:16 am
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Location: United States
First name: michael
Last Name: mcclain
City: pendleton
State: sc
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Status: Professional
what had you planned to use to provide the necessary heat?


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 Post subject:
PostPosted: Sat Jan 13, 2007 12:21 pm 
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Koa
Koa

Joined: Thu Apr 07, 2005 2:38 pm
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Location: United States
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Last Name: Coates
City: Selma
State: CA
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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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 Post subject:
PostPosted: Mon Jan 15, 2007 12:59 am 
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Koa
Koa

Joined: Sat Feb 12, 2005 6:20 am
Posts: 1437
First name: Bob
Last Name: Johnson
City: Denver
State: CO.
Zip/Postal Code: 80224
Country: USA
Focus: Build
Status: Amateur
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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 Post subject:
PostPosted: Mon Jan 15, 2007 2:28 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Mon Feb 21, 2005 6:16 am
Posts: 2244
Location: United States
First name: michael
Last Name: mcclain
City: pendleton
State: sc
Zip/Postal Code: 29670
Status: Professional
glad things worked out well for you.


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