I'm wanting to use my 4" planer to taper some bamboo. On a 68" bow, give me a reasonable thickness as handle, and taper to what th8ickness at tips. (I realize my tiller will make a difference and account for draw weight, but just some ball park numbers would be helpful.) How thin can bamboo be? Also, once glued on bow, can I take my belt sander and knock of the nodes?