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PostPosted: Sat Apr 29, 2017 6:10 pm 
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Brazilian Rosewood
Brazilian Rosewood
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Joined: Wed Feb 20, 2008 9:12 pm
Posts: 6977
First name: Mike
Last Name: O'Melia
City: Huntsville
State: Alabama
Focus: Build
Status: Semi-pro
I have a very talented player who wants the Small Jumbo. Wants a pinless bridge. How would I or could I modify current design (I really like the look) to do this?


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PostPosted: Sat Apr 29, 2017 6:20 pm 
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Brazilian Rosewood
Brazilian Rosewood

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First name: Ed
Last Name: Bond
City: Vancouver
Country: Canada
Focus: Build
Status: Professional
I done believe you'd need to modify it all all, beyond the bridge itself.


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PostPosted: Sat Apr 29, 2017 7:33 pm 
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Cocobolo
Cocobolo

Joined: Fri Nov 02, 2007 2:53 pm
Posts: 443
Location: Canada
There's a Greenfield video somewhere that shows everything stays the same except the bridge.
'Making a Guitar" Greenfield Guitars.


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PostPosted: Sun Apr 30, 2017 7:31 am 
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Koa
Koa

Joined: Sun Apr 25, 2010 4:46 pm
Posts: 501
First name: Mark
Last Name: McLean
City: Sydney
State: New South Wales
Zip/Postal Code: 2145
Country: Australia
Focus: Build
Status: Amateur
You could do it exactly the same as for a pinned bridge. However, it is worth thinking about your options with the bridge patch, or whether you need one at all (many classicals don't have one). If you don't need to reinforce the soundboard against the ball ends of the strings, then you don't need to be sticking a piece of hardwood in there. Some stiffening of the top under the bridge is not a bad idea, given the pull of steel strings is more than of nylon. But it could be a cross-grain spruce patch; which is as stiff, but lighter than hardwood. The only problem with that might be if someone replaces the bridge after you are dead and gone, and drills holes for strings through your soft spruce bridge plate.

You might want to Google images of bracing and bridgeplate designs by Lowden (small hardwood bridge plate) or Breedlove (not sure what it is made of - ?maple, ? spruce), which both make pinless SJ size models.


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