D-18 Crack Repair (return to gallery)
This is the before and after photo of the repair done on this D-18.
You can see the rectangular shaped residue from the duct tape that was used to cover the hole/cracks on the side of this D-18.
After removing the duct tape and as much residue as possible, I start the repair by working wood glue into the cracks.
I run a guitar string through a curved maple block that is backing a strip of glue-covered maple veneer (upper left), then run the string through the side of the guitar (upper right). Feeding the string through my guitar tuning machine jig (lower left), I tighten the string until the block and veneer are clamped securely against the inside of the guitar (lower right).
The plexiglass is flat, but the side of the guitar is curved, so I wedge an angled block of maple to create a more even clamping tension across the entire crack (left). The picture on the right shows that the block/veneer on the inside of the guitar is positioned over the crack correctly.
After the glue has dried and the clamping jig removed, I fashion a piece of mahogany to fill the hole. While the crack is functionally secure as it is, a little cosmetic work will make the finished repair a conversation piece to be pointed out instead of an eyesore to be hidden with duct tape!
The piece is fitted to leave as few gaps as possible and so that the grain of the piece is in line with the grain on the guitar (upper left). After all remaining gaps are filled (upper right), the remaining tape residue and excess gap filler is leveled (lower left). Lastly, I apply color (lower right). When this dries, I'll be ready to spray a protective coat of glossy nitro-cellulose guitar finish.
The final repair, while not invisible, is secure and should last the life of the guitar.