i already use shoot shafts. the key to it is make a thousand use the ones that shoot best lol. just joking. but if im splitting them and plaining them out, so grain runs straight. i can build them over kill at first then basically like tillering a bow, keep checking spine as i thin them out. build a bunch all same length same spine. then weigh them with a grain scale. put them in bundles according to weight.then make arrows.Tony