QUOTE(Just Jim @ Jul 8 2010, 07:17 AM)

That is my biggest question... what wood makes the best keys?
Anything dense for more ringyness, is what I figure... like oak, maple, rock maple, ebony, and so on. Anything will do though, even pine, and it will ring just fine. The most important thing is that the wood is straight-grained, knot-free, and that it is *quarter-sawn*.
For the most basic of xylophone keys (that is to say, making no added scallops and scoops into the underside for extra tones and such, or for marimbas... just basic, xylophone keys), all you need to remember is 22.5% like I mention in my blog. 22.5% of each key's length from either end is where the vibratory nodes are to attach the keys to anything
Now, if you're looking to spend a heap on something huge and something you can leave in your backyard, stuff like purpleheart and teak are superb - exceedingly high silica content in the wood - done right, rings well, and due to that silica content, can be left out in any weather and will be just fine... but for the same reason, the silica, it eats the CRAP out of blades - planers, routers, whatever - y'almost need to resharpen after every pass... and after so many, you need to buy new blades and bits
I'd stay away from those woods haha
But yeah, again, any wood that is straight-grained, knot-free, and quarter-sawn - and you'll have killer-cool sounds come out of it
What kind of woods do you like??