Last night I took a run at repairing the cracks between fretboard and neck on my new Jack Casady bass. I slacked the strings, then had my wife help me. The way to get the cracks open a hair was to hold the body of the bass and twist the headstock at the same time, which fully occupied one person. I took a very small syringe and loaded it with fresh super glue, and injected glue into the cracks one at a time while she twisted, then clamped the neck for a couple of hours. It appears that the neck is now solid and at least adequately glued...so the big operation was a success.
But this is a good news-bad news post.
What remains is clean-up, because we got enough super glue into the G string side of the neck that it ran out and onto the neck - and I dabbed at it with a tissue, which in retrospect was probably NOT the best tool...as it left bits of tissue stuck to the glue.
So now the question is how to get the glue off.
I could try the obvious and use nail polish remover or acetone, but given the lovely finish on the neck I'm not eager to try that unless someone here can assure me that the finish on the Casady isn't subject to attack by acetone. I thought about trying to find an inconspicuous spot on the bass to try touching it with acetone, but I can't find such a spot.
At the far end of options from acetone, it occurs to me that I could use something like fine steel wool or 2000-grit wet & dry sandpaper very judiciously, then polish with 3-M Finesse-It II machine polish.
Any suggestions? A photo is below - don't shudder.