TJ Thompson’s Crack Repair System – The Looth Group

TJ Thompson’s Crack Repair System

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Dan Erlewine

TJ Thompson’s Crack Repair System

June 27, 2025

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TJ Thompson Crack Corrector From Stewmac

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TJ Thompson Crack Corrector From Stewmac

TJ Thompson’s Crack Repair System

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June 27, 2025

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Acoustic Repair, Repair and Restoration

crack corrector, crack reapir, dan erlewine, fish glue, tj thompson

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The Prop Jack

by Doug Proper and StewMac

“It’s so much faster to put in place and expand…I can go places that were practically unreachable before.”
Gary Brawer, Gary Brawer Guitar Repair

“The Prop-Jack is a big upgrade over the old turnbuckle-style jacks. It’s lightweight, fast, and super efficient. I love how easy it is to position exactly where you need it and tighten with just one hand. It definitely makes clamping loose braces a breeze.”
Dusty Gregg, Gregg Guitars

“The Prop-Jack is a clever solution and an elegant design. It’s lightweight, and easily and effortlessly manipulated with one hand. I can literally tighten or loosen this thing with one finger! The way it holds itself in place means you can make little adjustments here and there without it falling into the body of the guitar. That feature also makes it handy for dry runs for complicated clamping. The rubber feet are firm enough to stay put, but soft enough to not leave any marks behind. Both sizes are useful on their own, but I’ve found a set of four gets me in and out of even the most complicated internal repairs. These are a joy to use!”
Justin Eisenman, Eisenman Guitars