Finding the spine of a carbon arrow

[N3YMY]

Does anyone here have access to, or know someone who has access to a device similar to this for finding the spine of an arrow?

And no, I am not interested in the “bath tub” method…

 

[4g64loser]

Don't know as I have never needed such but the guys up at new beginnings archery near gettysburg have quite the shop full of tooling. They unscrewed my (first) compound bow that another shop restrung and supposedly tuned. Wrong spine of arrows, plenty of issues in the bow work that my rookie eye didn't see. The owner got me fixed up, made me up a dozen (correct for my bow) arrows, and then rechecked the tune with me shooting it.

His work area was awash in tooling and fixtures but I'm too new to the game to have noticed if what you linked was there.

 

[RoadDawg]

Hope this helps…

 

[Archeryrob]

I got one on my work bench I built 20 some years ago.

Like this one

cheap, easy , accurate spine tester

cheap, easy , accurate spine tester

www.tradgang.com

 

[N3YMY]

His work area was awash in tooling and fixtures but I'm too new to the game to have noticed if what you linked was there.

Sadly, they didn't have such a device; I'll have to do a drive by at Apple Harvest for them; sounds interesting...

 

[N3YMY]

So I came across a novel technique recently to do this with a bow press.

Cut and square both ends of your shaft. Put points in both ends.

Place the arrow in your bow press and then flex it slightly. The direction it bends is the weak spine side. The vid recommended turning the arrow slightly and retesting until it bends downward towards the floor. Now mark the strong split side with a silver sharpie.

I’m gonna try it and report back…

 

[N3YMY]

So I came across a novel technique recently to do this with a bow press.
I’m gonna try it and report back…

This technique worked well for me.

The only limitation: bare shafts under 27” cannot be pressed in the bow press I have access to.

Fortunately, daughter no longer flies bare shafts below that