The board is only 72" long so I wouldn't be able to make a super long, longbow, but I think if I can back it with bamboo I should be able to get a nice draw weight easily over 60# I would think. The board is 6/4 which means it's something like 1 1/4" thick or so. I can easily get the shape I want along with a slightly thickened handle from that thickness of board. Unfortunately I started chasing a ring on this so I really only have a center section about 2 1/2" to 3" wide to work with. Actually I think it's probably no wider than about 2" at the narrowest end.