Optimum spacing for the two melody strings
Instruments- discuss specific features, luthiers, instrument problems & questions
I'd guess the McSpaddens used wood glue for assembly. I don't think super glue was "a thing" way back then.
If the nut and bridge were glued in the traditional way, they'd only have a drop or two of glue holding them into their slots, making them easier to remove with a sideways tap of a hammer as mentioned below.
You don't want to use a nut blank of different thickness than that of the original one. You'd be asking for trouble. See if a guitar shop like Guitar Center sells something you could use. And mask-up if you cut bone, as it's nasty stuff to breathe!
