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Tester complete
Steve Cover:
Very nice.
I've considered making a new Spline testing jig based on the Hill design too so I can use the dial indicator instead of the steel ruler I've been using.
Hill used a bolt for his weight, I like your idea better.
Thanks for sharing.
Steve
stickbender:
Yeah, just because it is simple, doesn't mean it's easy! ;) I don't follow the reasoning for adjustability, for different types of shafts..... I be confused...... ??? ???
What is the difference if the shaft is boo, or cedar? If it spines the same, what does different material matter?
Wayne
Pat B:
Cane and hardwood shoot shafts are irregular at best. To test all four sides of the shaft the adjustment is needed to get the indicator to be zeroed. Cedar shafts are machined true so no irregularities along their sides.
stickbender:
Wouldn't you just find the stiff sides, and then spine those? Like floor tillering, find the weak, and strong sides, mark them, and spine.
Wayne
artcher1:
Wayne, as Pat stated, sometimes the irregularities are just to great in cane/shoot shafts to zero out with the dial indicator itself. And there are times you may want to get a quick spine reading on crooked shafts before going through to trouble to work them up. I know thats saved me a lot of time of fooling with shafts that were either to light or to heavy for my needs.
You will find by making one end post adjustable you will solve many problems when using these natural materials. These testers can be used for more than just spining shafts. They're great for checking straightness on dowel shafts. Or for finding problem areas that's not often apparent with the naked eye, like a bent shaft around or under the fletching area. Matter of fact, you can get false strong/weak reading if the shaft isn't perfectly straight to begin with. Add some roller bearings and you have a spin tester for broadhead alignment also. ART
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