Sorry for not responding earlier. Can't post pics, haven't got a camera for the moment. But Pat is correct. Think hollow limb design – or a (mild) half pipe!
![Smiley :)](http://www.primitivearcher.com/smf/Smileys/default/smiley.gif)
My mentioning of "the opposite effect" to what happened to my bow was in reference to a description in TBB.
I put the bow by the wood stove today (warm and dry) and over the course of the day the amount of concave bend (concaveness?) went down with about a third. Good omen. It's getting there.
Thanks, LittleBen, for your comment. I'll keep it in mind!