I've got a EB 18 Martin electric bass (one of the few made in the late 1970s), which served me well for many years. I was doing an outdoor gig a few years back, and it was sitting on its stand, ready for us to start playing. A big swirly gust of wind came along, and blew it off the stand! Its neck, just near the stock, fell on the foot of another guitar stand, and result in a huge split as the strings tried to pull the stock off.
With only a few moments before we were to play, I was able to do a quick fix by putting capoes on the first and third fret, each acting like a clamp, and detuning the whole thing a tone. I managed to scramble through that gig with unusual fingering and without further damage.
When I got it home I was able to repair it and play it again. The repair was not completely invisible, but effective. I can still see where it cracked, though others may miss it. However, I was too scared to take it out on a gig, so it just sits on a stand at home and gets played every now and again, in a relatively secure environment.
It's not worth selling: I couldn't sell it with the crack, and though it was a Martin, their electric models were never that popular anyway.
