The "what wood for Handles" question pops up from time to time, it was on another forum a while back. The two main criteria seem to be strength - ie is the wood strong enough for the job, and does it transmit or rather limit vibrations to the user. I'm no expert but expect that almost any wood that meets these criteria should be ok, no need to get hung up over Ash or Hickory! Don't get me wrong though Hickory is a very tough wood if you can get it. I currently have one Hammer handled with Oak and another in Beech - I'll let you know when they fail, but don't expect it to be anytime soon :p