The bow I have is tillered out to 20", it's only 42" tip to tip. The bark was cracking like crazy during tillering, a little scary. I was never sure if it was the bark or the wood, but it survived. Like I said the the bark is still on. I tried steam, tried submerging it for a couple days to wet it, tried picking it off with a knife. In the end the bark kicked my a :os.
Tattoo Dave