Hi everyone , Ive been asked to shave the back of the neck on a US Jazz bass , its the type with carbon fibre stiffening , and the owner finds its a but too round and full in his hand . does anybody know how much wood I've got to play with before I find the truss rod or CF ? its a beautiful thing and Id hate to trash it ha ha .
I vote for a new neck and preserve the original.
I accept the too round, but too full in the hand doesn't say Jazz Bass to me.
It might be smart to have your customer find a neck he likes, if only to have a better idea of what he wants. Its easy to take wood off but...
If too round, then it seems to me he wants a vee. You can do a vee without cutting into the crown and the crown is where the truss rod is found. Joshua's suggestion to have your customer find a neck he likes is a good one.
As for stiffener location, perhaps you could pull a fret and drill into the fret slot as though you were drilling to steam a neck off, looking for black carbon fiber shavings. I'd guess they would flank the truss rod.
The customer wants a shallower neck , so more D than C shape , I've had it x-rayed and it shows 6mm or 1/4" of wood behind the rod ( in the pic the metal of the truss rod and E string are the bright parts , you must look carefully to see the wood below the truss rod . No CF is visible . I need to contact the owner but he is out of the country for a while .
Hi Mike , I have a customer who is a radiographer and is also a good guy , he is ok with helping me out sometimes . In the image you show , at the top the white stripe is the E string , next the frets with an inlay , your red arrows are just the edge of the board , the curious mark might be something from the background showing through the film , below that is the strong white line of the truss rod with a gentle curve , then looking carefully you can see a grey stripe below truss , thats the wood at the back of the neck . I hope to remove about 2mm at the centre , rounding out the deep curve it has now .
OK, got it, thanks for that. Yeah, I missed seeing the bottom edge of the wood itself... thanks for the "roadmap"!
PS: and it's gotta' be cool to have a radiographer friend :)