Anticipating responses, I've queried a custom laminated hardwood manufacturer about shafting wood manufacture. I did not attempt to tell them their business. Rather, I attempted to tell them results wanted; let them fill in the blanks, I hope. If I asked the wrong questions, please let me know the right ones.
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I seek a dimensionally stable, warp resistent, highly impact resistent wood for archery arrow shafting. Presently, wood shafts are made from: hickory, laminated birch, Ipe; Sitka spruce, maple, and other.
My goal is shafting as impact resistent as hickory that is essentially distortion free while being weatherproof. The material must be no more difficult to work than the least workable of the woods I identified previously. Thickness of shaft would be in the range of .325-.350 inch along up to 33-inch length. The rough dimensions I furnished allow shaft to be customized for bows, archers, and intended use.
Please be aware I am not going to do the shaft creation. Rather than try tell you your business, I have tried to give you results wanted. While dowel stock would be easiest for shaft fabrication, panel should be acceptable, albeit more expensive for the fabricatior. If hickory shafts did not warp, this would be my wood of choice -- but it does. So I'm trying to achieve as close to inert version as I can.