Can you put nylon strings on a guitar not techincally designed for nylon? Would it affect th neck negatively? Thanks!
It wouldn't sound good. AT ALL.
It'd be tedious to do, if not impossible, it wouldn't sound very loud, the different tensions may or may not effect the neck, strings may be too thick for the generally narrower necks that steel string guitars have.
That's one I hadn't thought of, strings may not fit in the steel string nut slots.