So got the first piece of blackthorn roughed out. It’s pretty narrow in diameter, I narrowed the stave a little and steamed a recurve into the tips, maybe more of just a flip, the string won’t be in contact.
I’ve taken smink’s advice and the flipped tips will be static. I’m going to put a little deflex in the handle and then give the limbs a tiny bit of reflex that I expect to loose in the tillering. This is partially more about straightening them with heat and it’s easier to straight out the wobbled I to a constant curve than a straight line.
I’ve got it clamped straight to dry fully on the radiator, this should get most of the wobbles out and then in a week or so I’ll do the rest and glue on a riser.