I am seeking a glue for a black wax cylinder (Gold Moulded or Wax Amberol). I know ... it won't be playable again, and I don't care. It just has to be in one piece again to look slightly better than a dozen different sized pieces on the bottom of a cylinder record box.

I have tried superglue and 2 component epoxyd glue. Both don't work well. The pieces hold together well in the beginning, but after the glue is hardened, they can be seperated again easily.
Has anyone experiences with a glue that works much better than this?
I know that the Michael, the "cylinder doctor", can repair any cylinder very well. And I asked him for help with a broken rare brown wax a while ago. But this time I have a few "ordinary" cylinders that are not worth much at all, even if they were in great condition. So, the professional repair would cost several times more than the actual value of the record.
Has anyone a good advice?
Cheers
Helmut