by Mcneilwaeasteel » Thu Feb 28, 2019 7:49 pm
Hi, I've been writing this book and just noticed Keith's advice, it may work but here's my tuppence worth in detail
Regards the "twist in the neck" it depends on how it will effect the strings between the bridge and the nut, if it does not effect the string levels to the fretboard and the strings run true, anything else is cosmetic and of no concern.
Compensation under the nut to raise one side slightly would be OK as long as it's not a lot and could effect the distance of the pick up to the strings.
If the neck has a twist in it that is visible, straightening the neck could be a problem as the wood has probably dried out and may have become brittle in the process.
1 How did it get there in the first place, as it's happened over a 60 year period.
2 The wood has been sealed with varnish since the guitar was made and either dampness or extreme heat has got into it or a weight has been on top of it causing distortion.
3 Is the wood dry or moist? If possible use a hydrometer to check moisture content.
( if you know of any wood turners they may be able to check it with a moisture meter )
Now to figure out how to repair the " damage"
Firstly strip everything off the body and sand the damage part back to bare wood all around, to allow moisture into that area.
( or the strip the whole body if it needs refurbished as it will give a better finish when stained and sealed )
Try to remove the fretboard without damaging it as it's just glued on, but the glue used in the 50's was strong, so it may not be an easy task.
A 24" metal rule or straight edge will be needed to highlight where the twist starts,
a 3' length of straight 4" X 2" or 6" X 2" is needed to clamp down the guitar, to hold it in shape until dry.
" Borrow " an electric kettle or steam wallpaper stripper ( use the tube ) and steam the damaged wood mostly on the side that has to be stretched with a bit more moisture than on the other side, try doing it in stages at first then when it's warm and moist clamp it onto the plank, clamp the body face down on both sides at the back then the end, clamp the neck where it's touching the plank, then very slowly clamp down the twisted part using a bit of wood between the guitar and clamp to spread the pressure point out, until it's stretched and touching the plank, if you don't remove the fretboard you'll need suitable packers to raise the body to make it all level. ( You can never have to many clamps. )
Leave it clamped for at least 3 days in a dry place that has dry air circulating around the guitar, don't try to force it but let it dry naturally, then slowly lessen the pressure on the damaged area to see if it retains its shape.
You might have to do this again several times to get it back into shape, you may even have to put a small piece of packing under the " good " side to let the damaged bit go over a bit further than needed, so that it returns to the original level when dry and the pressure is removed.
If you are successful keep it clamped to the plank with a few clamps until the wood is completely dry. ( a small room with a dehumidifier would be great )
When fully dry and straight seal the wood and stain and finish the body before replacing the other parts.
A luthier would do something similar but it's a time consuming job and would be a costly repair.
If the wood is weakened or very dry it could split at any time, so if you try it yourself it's only clamps and a bit of wood you need to acquire along with a straight edge.
The alternative to all this work is to " acquire " a new plank and use the body of the original guitar, as a template to cut out the shape and holes required for fittings and fixtures.
Hope this helps and good luck with the repair.
Robert
No longer slummin, I’ve got a Mullen and a damn good amp as well,
they’ll be well played, if not played well, seat time alone must tell!