as far as seasoning goes, the only way to go about it is to let time do it's thing, drying can be done (as said before) with a hotbox, or (my favorite method) sticking the stave, split stave, or what-have ya in a car right on the windshield during a month or so of hot sunny days. but seasoning can take years as the wood looses minute amounts of moisture through the surface, and hardens as it does, a bow can gain a noticeable weight from it's original tiller through "seasoning"
