While trying to disassemble some SMPS transformers for rewinding I have managed to break the ferrite core. I broke the 'arms' of the 'E' half.
Also, I found broken core transformers in apparently working SMPS. After I removed the surrounding adhesive tape, I saw the core broken in two.
If I glue the pieces together will it have the same performance? The question applies to 'E' and 'ETD' (cylindrical) cores with air gap of 0.5 - 1.5 mm.
And what is a good method for ungluing a SMPS transformer's core?