This is a stupid question but how would the cryo effect wood? I understand endorse the process wholeheartdedly for metal/wire but would'nt the cryo affect the benefit of the mrytle, ie the natural resonance properties? Just curious...
Myrtlewood is incredibly dense, so the cryo most likely just tightened up the grain a little bit. I really couldn't tell any difference in what they do for sound quality after I cryo'd them. I've since decided that I am not going to offer the cuboids anymore (I like them, they just don't sell very well), so I didn't experiment any further with cryoing them. I really just want them off my shelf at this point...hence the low prices.
I do have a customer that makes very high end mouthpieces from exotic woods who swears by my cryo process, so take that for what it's worth. No, I won't tell anyone who it is...believe me Dan (burlaptocashmer) has been after me forever to tell him who it is.
The mouthpiece customer probably weighed in on my decision to cryo them, as he reported such good results. I remember standing in front of the chamber, and had room left, and the bag o' cuboids was right there, so...
I used to cryo all kinds of crazy stuff just for fun. Lots of it worked out well, some it made no difference at all. If you can find some cryo'd gold balls, give them a try.

Lee