I am finishing a Swampscott Dory and am making a mast out of Norwegian Spruce. It is rough cut to a 13 foot long tapered square pole. I am to make it a round mast, 3 inches at bottom, 2 3/4 inches in middle and 1 3/4 inches at top. Is there a place I can look to see how I can do this nicely and not ruin a great piece of wood? I have mostly hand tools.