What is the best glue for bakelite?

[vintagekiki]

A moment of inattention and I broke nose on bias test octal adapter.
Does anyone know what the best glue for bakelite?

[Bloomfield]

I would think a good epoxy- not 5-minute, but something slower that will penetrate better. If you could reinforce the hollow centre with some kind of pin or dowel that would help its chances of staying together.

[Mick Bailey]

+1.

That works just fine.

[g1]

I'd also expect the epoxy to work well.
However, because this is a bias probe, it is going to be stressed much more than a normal tube would.
If the glue won't hold up, try to find one of these keyway replacements:

https://www.partsconnexion.com/OBLIG-83120.html