Reducing wood arrow spine by sanding

bgram · August 13, 2015, 09:29:00 PM

I made up some spruce shafts, but spined 2 shafts out of the range I need. I had ordered 55-60, these two are 63lb on my spine tester. Is it possible to sand these shafts down a bit to get them around 60-61lb range? If so, how do any of you do it?

Thanks in advance, I appreciate it.

August 13, 2015, 10:37:00 PM

If they are not tapered and fletched and nocked you can spin them with a drill, run one end in pivot hole, but don't start a fire. If they are fletched you can still sand them, just watch your pressure and count your strokes.

Pat B · August 13, 2015, 11:59:00 PM

You can sand the center 1/3 of the shaft to reduce the spine Go slow and measure often.

bgram · August 14, 2015, 07:52:00 AM

Arrows are still raw shafts, thanks for the replies.

Jack Skinner · August 14, 2015, 11:47:00 AM

Raw shafts, you dont need much off take some 220 sandpaper 1/3 of a sheet folded in half. Put on a leather work glove the sandpaper will get hot. Fold it around the shaft and run it up and down a few times turning the saft in your hand, test spine, go slow. Once within around 1lb of desired weight switch to 400 and hit it a few times to smooth out. You can go to 600. Good to go.

M60gunner · August 14, 2015, 12:34:00 PM

I knew an old timer that did all his shafts to match using Jack Skinner's method. He also did the rear ends to match weight. He would start with close matched shaft so as not take off to much on any one shaft in the dozen.

ozy clint · August 16, 2015, 01:02:00 AM

sanding works well for adjusting spine on bamboo arrows. it would work just as well on woods.

TSP · August 16, 2015, 03:31:00 PM

Since apparently your bow will shoot 55-60# spine well I don't believe you'll notice much of a difference with 63# spine (assuming your tester is accurate). But if you think you will, why not simply make the shaft an inch longer @ BOP or add 20-25 gr. to your point weight to compensate? Much easier than fussing with shaft sanding.

Reducing wood arrow spine by sanding

bgram

Pat B

bgram

Jack Skinner

M60gunner

ozy clint

TSP