Can you use heat or boiling water to loose metal parts glued with U-40 Rod Bond? Or is there another way to loosen the parts?

You can try. Boiling water is safer as it doesn't tend to ruin the epoxy that binds the blank fibers as a heat gun might.

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I have used boiling water to remove many reel seats.

I would not have thought that boiling water (~212*F) would be sufficient to soften the types of epoxy commonly used in rod building. While most epoxies are considered “low-temp” (<150*F), even though basically plastic, I would have thought considerably more heat would be required (>300*F) to soften them. Thanks for the info Phil.

Mark Talmo
FISHING IS NOT AN ESCAPE FROM LIFE BUT RATHER A DEEPER IMMERSION INTO IT!!! BUILDING YOUR OWN SIMPLY ENHANCES THE EXPERIENCE.

I have also used boiling water or a heat gun to remove reel seats. Sometimes it works and sometimes it doesn’t. Is this a salvage job removing the seat from a broken rod or do you want to replace the old reel seat with a different one? Have you removed the rear/fore grip or not? There are different options available.
Norm

It is actually a fly reelseat with wood insert. Actually the center of metal part is slightly off center. Actually, I am the only person seeing it. I wish to have it perfect. Thanks for the answers.