Broke ferrite core

Hello;

I was disassembling a small power supply transformer that used one "E" and one "I" ferrite cores; it needed to be rewinded with new magnet wire. The manufacture used some kind of epoxy to hold it in place which required it to be heated up in order for it to melt; after heating it up, I pulled the "E" core out and it broke into a few pieces.

My question is...could I super glue the pieces back together? Would it still work properly? This has never happened before, so I don't know what would happen and I don't want the circuit to fail because of it. If it doesn't work, where could I find replacement bobbins and ferrite cores at? I'm repairing a rare hard to find (expensive) laser power supply. Thanks for the help!

The glues cracks will act as core gaps, so they will lower the inductance per turn squared value of the core. Was there any gape spacer between the E and I section, when you took the core apart? If so, you could compensate for the additional gaps by reducing that one. If, instead, the contact faces between E and I were lapped to a nice flat polish (rather than being just as fired), then the makers wanted to keep the effective gap to a minimum, and the new gaps may seriously increase the magnetizing current. The detriment of the new gaps depends a lot on the circuit topology. By the way, I hate to use instant glue on cores, not only because it doesn't give you time to get the pieces fitted optimally, before it grabs, but because it is not very heat resistant. Slow cure (higher temperature, harder) epoxy is better, I think.

What are the dimensions of the core? You might be able to replace it.