kevinsmith5,
Funny how so much of the SCA is about trying to be all historically accurate but when it comes to archery it's almost anything goes, other than compound bows. I've messed about with the SCA off an on for the last few years and it's always amazed me how many folks put so much time into their garb but then give up when it comes to trying to have period-correct archery tackle. As for your question, you could get a pretty convincing Asiatic-looking composite bow using only bamboo back and belly with either some other wood for a core or even all bamboo. James Parker has made some pretty amazing bows that were all bamboo. I have a 'Bows of the World' book that mentions (along with one of the TBB volumes), that one of the Asiatic bows was in fact all bamboo and didn't use horn and sinew. It might have been a Mongol bow if I remember correctly. The bamboo belly would need to be heat treated (carbonized), to get it to be stronger in compression. I've played a bit with this design in the past but so far have had no success. I've tried emailing James Parker in the past to ask about his construction methods but he's never answered any emails I sent him through his website or private messages through here or one of the other archery forums. So, you're on your own regarding that. The ATARN website might be helpful, but I think it's mostly horn/sinew composites folks are doing over there, although I can't confirm, not having been on their board much.