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Originally Posted by liquid sunshine about six years ago i hit the headstock of my neckthrough spector into my svt causing much for the fret board to be knocked loose from the neck. like an idiot i found gorilla glue squeezed a crap ton of it in there and clamped it together. aside from the glue bonding the trussrod to the neck and fret board i also had no idea it expanded so much. i am just looking for advice on how to free the trussrod. i did have one person heat an allen wrench in an attempt to soften the glue. i was also wondering how possible it would be to run a very small saw blade and cut the fret board off then replace it, but that sounds kind of crazy
any ideas would really help thanks |
This is an interesting problem. If there was a lot of glue applied, there must have been a lot of squeeze out. It is also likely that the joint is stepped. Your comment on the foaming qualities of polyurethane glue would imply that the fingerboard is not level.
Fingerboard removal is pretty straight forward. Heat is applied and pallet knives are used to separate the fingerboard from the neck. The difference here is that white and yellow glues loosen up at 175-215 F. Polyurethane glue will take a bit more heat. Franklin International recommends starting at 280 F and moving up in twenty degree intervals. That's a good bit of heat. Wood ignites at 451 F.
Generating the heat is a bit of a trick. Some repair shops have and use
heating blankets to apply heat. It is absolutely the best way to do it. However, they are expensive. Some folks use halogen or heat lamps. They are slower, adding to the boredom of babysitting the project. Speaking of babysitting, it is important to be vigilant during the heating process. Don't leave the room. Don't desert the workpiece. Occasionally test the joint to see if the palette knife can be inserted.
On this particular project, the glue at the body end will loosen up long before the nut end. It will be important to keep that area separated. Wax paper or aluminum foil can be inserted between the fingerboard and neck to prevent re-bonding the components.
As far as the problems at the truss rod nut go, it is impossible to comment without more details. Images would be a big help, too. However, it is likely that heat will be at least part of the solution.