For the past couple of years as a guitar repair man, I've seen my fair share of Warwick truss rod nuts wearing out. Somehow the single action truss rods used on Warwicks do not straighten the necks much and usually the truss rod nuts are overtightened and worn out as a result. Here's a Warwick thumb bass which needed a truss rod nut replacement.
Worn out nut. This is actually the last step whereby the nut would've been taken out.
Neck is heated up to loosen the glue between the fretboard and the neck
Fretboard is seperated till the 10 fret, creating just enough space to remove the worn out nut
Fretboard is glued back. Can hardly see that the fretboard was even seperated in the first place
As mentioned earlier the truss rod doesn't straighten the neck much, hence I bent the neck into a backbow position to create space for the truss rod to move. Here's the result: the bass is playable again
Worn out nut. This is actually the last step whereby the nut would've been taken out.
Neck is heated up to loosen the glue between the fretboard and the neck
Fretboard is seperated till the 10 fret, creating just enough space to remove the worn out nut
Fretboard is glued back. Can hardly see that the fretboard was even seperated in the first place
As mentioned earlier the truss rod doesn't straighten the neck much, hence I bent the neck into a backbow position to create space for the truss rod to move. Here's the result: the bass is playable again
