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Tillering using belly ring feathering?
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Topic: Tillering using belly ring feathering? (Read 1622 times)
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cool_98_555
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Tillering using belly ring feathering?
«
on:
January 02, 2017, 04:00:22 am »
Hello everyone,
Just wondering if any of you use the gradual feathering of the rings on the belly to help you tiller properly. Seems pretty logical to use this so you don't leave one side thicker than the other and create twist, but ive never relied on this method of tillering very much. How about you guys?
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Bryce
Global Moderator
Member
Posts: 3,125
Pacific Ghost Longbows
Re: Tillering using belly ring feathering?
«
Reply #1 on:
January 02, 2017, 04:16:12 am »
Nope, each ring is different in its own way, whether it's bigger or smaller or grows unevenly.
Yes, a properly tillered bow with perfectly straight and even growing rings and grain will have a nice feathered belly. But it is no way to tiller a bow properly.
Tiller by the way the limbs bend and reacts to set; and you'll have a bow that will shoot properly and have a long life.
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Clatskanie, Oregon
Del the cat
Member
Posts: 8,322
Re: Tillering using belly ring feathering?
«
Reply #2 on:
January 02, 2017, 04:27:59 am »
It can be a useful guide at the fades or on the slight swell in the middle of an ELB, and for leaving slight islands around dogy areas. But it's not reliable for actual tillering.
Del
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Health warning, these posts may contain traces of nut.
Eric Krewson
Member
Posts: 5,432
Re: Tillering using belly ring feathering?
«
Reply #3 on:
January 02, 2017, 09:12:05 am »
This practice was preached as the bow layout gospel by one of the early information suppliers around 1990. I ruined several bows trying to achieve perfect feathering as it was suggested as the thing to do.
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Selfbowman
Member
Posts: 3,161
Re: Tillering using belly ring feathering?
«
Reply #4 on:
January 02, 2017, 10:13:15 am »
If the rings are real even it does appear that way but not a proven method by any means. This tells me that you laid the bow out down the center of the grain more than tiller.. I lay the grain line out down the stave rough the Bow out from that . Then go to heat bench and get it straight as I can . By roughed out I mean 1 3/4 by 3/4 in thickness. Once I get it pretty straight I build the bow . Yes sometimes it appears just like you are talking about.sometimes the thickness changes in the width of the limb. Cause one side is more dense than the other. The rings are thicker on one side is a dead giveaway. Arvin
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Well I'll say!! Osage is king!!
bradsmith2010
Member
Posts: 5,187
Re: Tillering using belly ring feathering?
«
Reply #5 on:
January 02, 2017, 01:54:38 pm »
I use the rings ,, but dont soley rely on them,, they can vary in thickness ,, but they are a nice indicator that you are on the right track,, especially on a roller coaster deflex in the limb,, it would really just depend on the wood,,
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BowEd
Member
Posts: 9,390
BowEd
Re: Tillering using belly ring feathering?
«
Reply #6 on:
January 02, 2017, 05:37:10 pm »
The main rule to remember is keeping the thickness even on both edges.Marking your centerline on the crown following the longitudal grain usually can make it feather right down the center.Like said it usually works out that way feathering down the center but I don't always rely on it.
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BowEd
You got to stand for something or you'll fall for anything.
Ed
George Tsoukalas
Member
Posts: 9,425
Re: Tillering using belly ring feathering?
«
Reply #7 on:
January 03, 2017, 01:50:50 pm »
No, not really. Jawge
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Set Happens!
If you ain't breakin' you ain't makin!
Badger
Member
Posts: 8,124
Re: Tillering using belly ring feathering?
«
Reply #8 on:
January 03, 2017, 05:31:10 pm »
If the rings are even I use it, one time the rings were 1/4" difference in thickness just across the width of the bow.
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cool_98_555
Guest
Re: Tillering using belly ring feathering?
«
Reply #9 on:
January 04, 2017, 09:32:27 am »
Really? So you're telling me that the sides of the limbs don't necessarily have to be the same thickness? I have heard that was a rule.
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Badger
Member
Posts: 8,124
Re: Tillering using belly ring feathering?
«
Reply #10 on:
January 04, 2017, 11:21:11 am »
Yes the sides do have to be the same thickness, thats why feathering does not always work. It is nice when it does work but needs to be checked, equal thickness of the sides is very important. I was just saying how I have gotten thrown off by not paying attention and just feathering the rings.
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Springbuck
Member
Posts: 1,545
Re: Tillering using belly ring feathering?
«
Reply #11 on:
January 04, 2017, 04:13:57 pm »
This is one of those things that is great when it happens, but not consistently good enough to be a goal in and of itself. It sometimes helps, and I keep my eye on it, but rings do vary in thickness all along both length and width of a stave, especially on small diameter trees. It's one more thing to guide you, but not an actual map.
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Tillering using belly ring feathering?