I was working on a hickory-backed oak stave, glued up with EA-40 mixed 2A:1B for max heat tolerance. Steaming had very little effect on the oak (it would bend, then go right back to nature afterwards). So I tried adding more reflex to the tips using dry heat, and one end delaminated. I threw some more EA-40 in the gap and clamped it for 24 hours - which worked through bench testing to my draw length. But it let go as soon as I drew full length. After that I worked harder on the joint, cleaning with sandpaper and acetone, glued, wrapped, and clamped. That has worked through test shooting with no signs of letting go.
But now I'm hesitant to use dry heat on a glued assembly. I used steam on my next (hickory-backed black cherry) and in future will either steam, or steam for awhile, then use the heat gun on the steamed limb. Anyone have experience/suggestions with a hybrid bending process?