I built a Hackberry a while back that would not bend. I first tried it with a heat gun. No bueno. I steamed it later and the tips would take no bend, maybe 1/2 inch at most after repeated attempts. I finally broke the last 6 inches of the tip off trying to get it to bend. Cant tell you why. Other Hackberrys have bent like a wet noodle. This one was different. ??