Really a bad thing to do. You glue a break, then put epoxy over it. Then you spin the prop on the engine. If it is not ballenced you get the problem of shaking the airframe apart.

The bigger problem is when the prop flexes. It will start throwing epoxy. Then, just at the wrong time, you will be spinning your engine up and the glue will let go, and the blade that de-planes with be sticking out of your friends throat or face.

If you break a prop and can't afford to replace it, maybe pick another hobby. Gluing a broken prop together is asking for a huge amount of trouble.

DON'T DO IT![:-]