I bought a YUGE Dunn pen with a wonderfully flexy nib, but the barrel has a piece broken off it (the piece is included). I asked the seller if it wasn't bchr, but he insisted that it was Bakelite and could be repaired. So I researched Bakelite repairs, and it appears that the antique radio and telephone fanciers have a variety of methods to keep their prizes in one piece.
I'm curious to see if anyone has tried any of those methods with pens. If it's fixable, I might try to keep the bits together because that magnificent nib may be too big for any of my ringtop pens - even my Dorics.