Primitive Archer
Main Discussion Area => Bows => Topic started by: billmac on April 11, 2007, 05:22:20 pm
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When you guys are making selfbows, do you round the edges of the limbs? Front and back? I've read that sharp corners have a lot of tension. Is that why they round the edges of 2x4s?
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I think the chapter on board bows in TBB Vol. 2 recommended rounding the edges to about a pea-sized edge, but I think that is only for the back. I'll have to check again.
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I like to round all the edges on my bows. ;) sharp edges just leave more of a chance of pulling up a splinter on the back or compression fractures on the belly. :(
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What Ryan said! Pat
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All 4 corners. Rounded'em up; head'em out; move'em out! Jawge
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Who do you think you are, Jawge...Roudy Yates! ;D Pat
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......". Roundy Yates"..... ;D ;D ;D ;D..............bob
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All 4 corners. Rounded'em up; head'em out; move'em out! Jawge
I thought we were talking about self bows, nobody mentioned Rawhide. ;D Justin
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Yep, I round all of the edges.
Sean
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I round all the edges. It looks and holds a finish better.
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Rounded corners dont dent near as bad either. Justin
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I like to round 'em too.
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"round n' round we go ! ;)........bob
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I also round them,just not as much on the back,a little more on the belly side,I keep the sharp edge smoothed off all the way through the tillering process,I have a little piece of rough sand paper and hit the edges after each scrapping before pulling on the bow.
Pappy
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I knew only the old timers would get it. Head'em up! Move'em out! Jawge
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I knew only the old timers would get it. Head'em up! Move'em out! Jawge
Hey Im not an old timer and I got it. Justin
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u may not be an ole'timer yet BUT keep hangin' around with the ole far## and u will be one soon enuf' ! :D :D....bob
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Maybe he's Mr. Favors.....or maybe Wishbone :D ;D
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Im not old, just lazy. :-X Justin
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I do like Pappy, I round more judiciously on the back just so I don't pull too much of my back ring off.
In addition to preventing splinters, I think the outer edges of a limb do less work than the wood nearer the center. So you are getting rid of less-working wood by rounding. There's something called the Poisson effect, its where the edges of a board curl up when you bend it. I'm not quite sure of what is going on here but I think it demonstrates that there are not equal forces acting across the limb.
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Tom Sawyer,
I think, from what I've read of Poisson's ratio , and the effects of Hooke's Law is that the back is trying to narrow due to the stretch tension applied, but, the compressive forces also applied to the belly counteract the effect. I think.... ::) ;D
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Makes sense. I suppose I'll have to actually look it up one of these days.
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Round all the edges, especially for wide flatbows. For ELB's round the back just a little, and the belly a good deal, diving the cross section of the limbs a "D" shape.
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Leaving the corners perfectly square allows me to get yew/osage performance out of lumberyard boards. By roughing out bows on a table saw I can easily build 6 bows an hour. When I'm finished tillering it I intentionally break it and take extensive notes on the process.--Oh wait, I round my edges and it takes me 4 months to build one bow.
I really like what Torges has to say about rounded edges in "Hunting the Osage Bow." I think he handles the subject better than anyone.
J. D. Duff
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It seems to me that many of the Native American Museum pieces I have seen have sharply squared edges, I remember thinking how perfectly square the corners looked, thinking "I can't cant do that even with modern tools".
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Were the bows sinew backed? If so I can understand the sharp edges. Sinew would take all the strain on the back then,
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Most of the museum bows I have seen from the southwest are more of an oval cross section. Justin
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This is the beauty of a site like this. This is an old post but I had the same question.
Just shows a little bit of searching and reading goes a long way. Thanks for the info!!
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Well, I might as well chime in. I'm not an oldtimer but middle timer @ 43 ::). Can't say as I've ever heard of Roudy Yates but sounds like rawhide to me ;D.
Yup, round them corners.
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ya i'm like cowboy,not a real ol' timer but i did get it right away ;D
i have learned to round all my edges,mostly for asthetic reasons and feel,atleast thats why i do it.
that and cause everyone here has told me to in the past.
tim
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I round the edges but not as much as some Ive seen. Im a bit confused on this subject. I talked to a profesional bowyer that told me rounding the belly causes a lot of set and slow arrow speed because it puts all the strain down the center on a small portion of wood instead of evenly across the limb. But the ELB bows work fine with a rounded belly ??? I round off the corners just so they are not sharp looking and have had really good luck so far.
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Round em up,,, Rollin,,, Rolin,,,, Rollin Ye ha!!! :o
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YOu guys are making miss Belushi and Akroyd....Blues Brothers!
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If you're using rawhide of fabric backing... do you round? Before or after backing...?
Thanks...
LUK
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wakosama when I linen back a bow I round the edges after. I use a new razor blade knife and cut the edge off at a 45, then use fine sandpaper to round the edge.
Sometimes the linen will fray some so I just use a little glue on the exposed fibers and lightly resand.
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wakosama when I linen back a bow I round the edges after. I use a new razor blade knife and cut the edge off at a 45, then use fine sandpaper to round the edge.
Sometimes the linen will fray some so I just use a little glue on the exposed fibers and lightly resand.
i does this apply to board bows also
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Actually the only time I've used linen is on boards ::) Guess I should have specified that eh ;)
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Thanks... that sounds like just smoothing over the edge, not noticably radiusing it like I think people mean with total wood bows. So I'll keep the back edges square and fabric it and then just round over a little.
I guess I was wondering if people seriously radiused the edges and wrapped the fabric around the edge down onto the sides of the limbs.
LUK
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I don't remember were I read it, but somewhere it says to round them to avoid splintering. So, I round them too.
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mhm- Im not sure if you'd round a crown if it was backed, but most of my longbows arent backed- and are kinda trapezoided in cross section. -jimmy
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To achieve true old timer status you must know what actor played Rowdy Yates. You can't look it up and you can't do an internet search because if you do you're only a computer geek. :) Jawge
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I don't remember him ever shootin' a bow though. Hmmm... maybe in Bronco Billy?
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Yes, on wood and bamboo backed bows also.
George, I'm not an old timer but I sure like to watch the old movies, so I do know who it was. ;D Justin
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"Make my Day !" ;D....bob
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"are you feeling lucky punk" I'm not old just guessing :D
JohnK
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Justin, "Rawhide" was not an old movie it was a series. Move'em out! :) Jawge
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Show offs. Name please. :) Jawge
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Who sang the song fer the tv series ? ;D Jawge and I know do ya ? ;D ;D ;D...........bob
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Frankie Lane? Jawge
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??? got me
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We have a "WEINER " er I mean a " WINNER !" ;D Yup says Jawge, Frankie Layne. "Head em, move em out, Rawhide ! " ;D........bob
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Bob, half these kids (under 50) think "Rawhide" is something you put on the back of a bow. :) Jawge
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Sorry George, I meant "shows." ;) We have a channel on TV that shows nothing but the oldies. It ran for quite a few years originally, but there are reruns still on. He was the king of spaghetti westerns. "If my percentage goes down, it's liable to effect my aim." Justin
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Justin, that's a great channel. Those old westerns were awesome. BTW the answer is Clint Eastwood played Rowdy Yates. Round those edges, everyone! :) Jawge
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I had it narrowed down to Clint Eastwood, but you answered too soon George. Guess I never really watched Rawhide.
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with an alias as "cowboy" and you never watched one of the best ever western tv series.
shame shame,now everyone knows your name ;)
peace,
tim
p.s.
yes i knew it was clint that played rowdy,and i even knew frankie layne sang the theme. and i aint even fifty(getting closer though)
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Wait a minute.... I thought the "Blues Brothers" sang "Rawhide".
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;D
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I'm under 50 but, Rawhide was great, Bonanza was great, But the Lone Ranger was the man!!! ;D
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The Lone Ranger was a great show. Then there's a the Rifleman which was, for me, the best 30 min. western. Yes, The Blues Brothers did Rawhide in their movie and they did it well. Frankie Lane--Blues Brothers. Hmmm. I'll take Frankie Lane. Jawge
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You guys are cracking me up.....MERRY CHRISTMAS BOYS.
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That was/is a great show George. But his kid Marc can sure get annoying. ;) Still anyone who can handle a rifle the way he can is worth watching.
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Pa! LOL, I know what you mean. Chuck Connors was quite the athlete. He played basketball for the Celtics and baseball for the Dodgers and Cubs way back when. He was the first to break a backboard according to Wikipedia. :) Jawge
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The Lone Ranger was a great show. Then there's a the Rifleman which was, for me, the best 30 min. western. Yes, The Blues Brothers did Rawhide in their movie and they did it well. Frankie Lane--Blues Brothers. Hmmm. I'll take Frankie Lane. Jawge
Ooo Good ONE!! Forgot about that one. Don't forget Gunsmoke, Death Valley Days, and of course Wild Wild West.
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I loved Wild Wild West. Great show. Jawge
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ok those are all god,but how about the high chaparral.
now thayt was one of my favs,oh yea dont foget F TROOP