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PostPosted: Wed May 06, 2009 8:46 am 
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Contributing Member
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Joined: Fri Mar 28, 2008 8:35 am
Posts: 348
Location: Spartanburg SC
First name: Richard
Last Name: Sprouse
City: Spartanburg
State: SC
Zip/Postal Code: 29302
Country: USA
Focus: Build
Status: Amateur
Hi All I am on my third build and i thought I would try my hand at mitred purfling at the end graft. I usually use the laminated binding (see link)
http://www.stewmac.com/shop/Bindings,_t ... dings.html

from SM. Can this be trimmed and mitred or is it better to use separate pieces?

thanks


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PostPosted: Wed May 06, 2009 8:55 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Aug 19, 2005 4:02 am
Posts: 3272
Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
Sure it can be mitered. You just cut the purfling back to the appropriate point (half the width of the end graft) and miter it. It takes a little bit of fitting to get it right but it can be done. I have found that using CA to attach the binding works best for this as it allows you to get the miter fitting really tight.


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PostPosted: Wed May 06, 2009 9:12 am 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Wed Jun 22, 2005 10:11 am
Posts: 2761
Location: Tampa Bay
First name: Dave
Last Name: Anderson
City: Clearwater
State: Florida
Zip/Postal Code: 33755
Country: United States
The first time I mitred the purfs I took a few pictures of the process.It should
still be in the "OLF tutorials" if you want to have a look.

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PostPosted: Wed May 06, 2009 10:12 am 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Thu Mar 22, 2007 10:59 pm
Posts: 2103
Location: Bucharest, Romania
Country: Romania
Focus: Build
Status: Professional
That's how i did it on my last 2 guitars (first 2 didn't have mitres); perhaps I am all wrong and slow at it, but at least it works:
After the endgraft is in, you start cutting the binding rebate. You start with a shallower cut first, only in the end graft area. It should be the full height minus purfling height. Then cut the full depth, stopping just short of the endgraft purfling. Make sure you do not cut the purfling... I use a gramil and finish with a chisel. Then use the chisel mirror trick to cut the graft purfling at 45 degrees. Next bend the binding, when it is done, start delaminating an appropriate lenght of purfling and bevel the end at 45 degrees again using the chisels mirror trick. Check the fit, cut some more purfling until it meets with the top joint line.

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PostPosted: Wed May 06, 2009 1:17 pm 
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Joined: Fri Aug 26, 2005 5:49 pm
Posts: 2915
Location: Norway
Get a copy of Cumpiano's "Guitarmaking..." book, it shows a very clear and methodical way to do this.

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