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Watch the Trade Secrets Video, Problem: a WaRpEd guitar top!
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Issue 262 May 19, 2016
Problem: a WaRpEd guitar top!
High action turned out to be a symptom of trouble for this guitar. The owner felt the strings were a little high. Taking a closer look, Dan Erlewine finds that the bridge is just about to pop off! A hump had formed under the bridge, and Dan comes up with an interesting solution.
Watch the Trade Secrets Video, Grain runout made this guitar bridge pop off!
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Issue 252 November 05, 2015
Grain runout made this guitar bridge pop off!
BANG! While this guitar was being played, the bridge popped off with a sound like a gunshot. Before Dan Erlewine glues it back on, he explains the likely cause of this trouble: grain runout in the guitar’s cedar top.
Watch the Trade Secrets Video, How to finish an acoustic guitar bridge
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Issue 251 October 22, 2015
How to finish an acoustic guitar bridge
A small finishing job like this is easy. After the bridge popped off this classical guitar, Dan Erlewine replaced it with a new one. In this short video, he shows how simple it was to put a finish on the new bridge before gluing it on.
Watch the Trade Secrets Video, Setting the string spacing at the bridge
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Issue 248 August 27, 2015
Setting the string spacing at the bridge
The string spacing on this old Gibson is uneven. Dan Erlewine shows how he made the E-to-E string spacing wider, then located the other four strings with proportional spacing, not equal spacing.
Watch the Trade Secrets Video, YIKES! Using a reamer in an electric drill
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Issue 243 May 21, 2015
YIKES! Using a reamer in an electric drill
This little parlor guitar was found in a trash can and Dan Erlewine is doing a quick fix on the bridge. The pin holes were entirely chewed up. Dan’s drilling them out with a peg hole reamer then plugging them with peg-shaped plugs of hardwood.
Watch the Trade Secrets Video, How to install classical guitar strings
Online video available
Issue 240 April 09, 2015
How to install classical guitar strings
Learn the right way to install nylon strings so they don’t stretch for a month before you can start playing.
Brazilian luthier Rodrigo Gomes visits Dan Erlewine’s shop and sets up a classical guitar for Dan to start learning to play bossa nova.
Watch the Trade Secrets Video, My friend Carl's bridge gluing tips
Online video available
Issue 234 January 15, 2015
My friend Carl's bridge gluing tips
From Dan Erlewine: “My friend Sui Keung Ho aka Carl, was visiting from Hong Kong, and spent a couple days in my shop. I was making this Trade Secret about gluing a bridge, and Carl chipped in with an additional tip. Thanks, Carl!”
Watch the Trade Secrets Video, Custom-fit styrofoam clamping caul
Online video available
Issue 231 December 04, 2014
Custom-fit styrofoam clamping caul
How to clamp a guitar bridge without crushing the braces inside: Dan Erlewine uses a chunk of insulation from the home improvement center. In this short video, Dan shares a trick for custom-shaping the foam to fit any guitar.

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