Jim, nice job!! I have a question. With aluminum shafts I have been told that the weld
area on the shaft is the stiffest and the heaviest spot on the shaft. This is were I try
and put my cock vane to make my arrows group more consistant together. Somewhat
simular to what I believe Tru-Flight arrow Co. does. I float my raw shaft arrows in my
bath tub with some soap added to the water and the shafts do in deed rotate in the
water to the same spot, which I assume is with the weld (or heavy portion) of the
arrow downward in the water. My question here is with your spine tester, can you
tell where the weld is on aluminum shafts by the deflection?