Primitive Archer
Main Discussion Area => Bows => Topic started by: sleek on August 18, 2013, 06:23:55 am
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But others, despite the odds being impossibly stacked against you give you a glimmer of hope. This stave is a belly split from a bow I made about a year ago. It was full of checks, some going all the way through the stave. and one actually running off the side. It also had a rotten knot in the middle of the upper limb,and not much width to work. I also had to heat correct twist and string alignment.
I filled the checks with TBIII being sure to get all the way through the bottom of the checks until glue came out the other side. I clamped them and let them dry. Using a coping saw I cut the knot out, used a rat tail file for finer shaping, and 80 grit for final blending.
The check that goes through the bow and runs off the side and the knot are all on the upper limb. Because of the length and angle of the check, I feel that it may have a chance in holding because its just like a very long scarf joint. I have 70 inches of stave to play with here and with all the defects on the inner/mid limbs, I decided a whipish tillered bow would be wise. I have it at brace so far, and that for me, is a major hurdle. The goal here is 40-45 lbs @ 25-27 inches. Gonna play it by feel here.
Here is the parent bow this stave is a belly split from.
(http://i1092.photobucket.com/albums/i411/rocketernally/dons%20bow/IMG_6292.jpg) (http://s1092.photobucket.com/user/rocketernally/media/dons%20bow/IMG_6292.jpg.html)
(http://i1092.photobucket.com/albums/i411/rocketernally/dons%20bow/IMG_6297.jpg) (http://s1092.photobucket.com/user/rocketernally/media/dons%20bow/IMG_6297.jpg.html)
And here is the current project.
Handle
(http://i1092.photobucket.com/albums/i411/rocketernally/hole%20in%20limb%20bow/20130818_033811_zpsf027a881.jpg) (http://s1092.photobucket.com/user/rocketernally/media/hole%20in%20limb%20bow/20130818_033811_zpsf027a881.jpg.html)
Run off check
(http://i1092.photobucket.com/albums/i411/rocketernally/hole%20in%20limb%20bow/20130818_033750_zps92545001.jpg) (http://s1092.photobucket.com/user/rocketernally/media/hole%20in%20limb%20bow/20130818_033750_zps92545001.jpg.html)
Hole back
(http://i1092.photobucket.com/albums/i411/rocketernally/hole%20in%20limb%20bow/20130818_033738_zpsb7839551.jpg) (http://s1092.photobucket.com/user/rocketernally/media/hole%20in%20limb%20bow/20130818_033738_zpsb7839551.jpg.html)
Hole belly
(http://i1092.photobucket.com/albums/i411/rocketernally/hole%20in%20limb%20bow/20130818_033825_zps0404bfbb.jpg) (http://s1092.photobucket.com/user/rocketernally/media/hole%20in%20limb%20bow/20130818_033825_zps0404bfbb.jpg.html)
Brace
(http://i1092.photobucket.com/albums/i411/rocketernally/hole%20in%20limb%20bow/20130818_033713_zps2f82bd59.jpg) (http://s1092.photobucket.com/user/rocketernally/media/hole%20in%20limb%20bow/20130818_033713_zps2f82bd59.jpg.html)
Tiller isnt perfect yet. But it will be perfect at brace before I start pulling back on it. What would yall have done with this? And please stop me before I make a mistake if yall see one about to happen!
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Cant se the pics beside the first two. PB say you moved or deleted them.
Tip of the day: Make a folder in photobucket named "shared" Dump pics you gonna upload there BEFORE you post them and never touch that folder.
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Cant se the pics beside the first two. PB say you moved or deleted them.
Tip of the day: Make a folder in photobucket named "shared" Dump pics you gonna upload there BEFORE you post them and never touch that folder.
I can see them ?
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I can see them ?
Unless something funny is happening you probably watched them Before they were moved and your pc got them in memory.
Restart and you prolly wont see them
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I can see them ?
Unless something funny is happening you probably watched them Before they were moved and your pc got them in memory.
Restart and you prolly wont see them
Yep now I can't
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Ok guys how about now?
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Now i see a cool bow :)
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Pretty slick, sleek! Yowza, some pieces of wood call themselves lucky when they fall into your arms!
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Holy smokes you like them easy staves don't you. :o
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Well thanks for the compliment JW. We will see how deserving it is if this bow makes it to final tiller.
KellyG, you haven't seen nothin yet. This stave is mild, tame, and docile compared to what I will very soon be tackling.Of course, that dodoesn't mean the staves I'm about to start soon will become anything other than fuel for my forge and knife handles.
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Well, I got the bow back to 26 inches. I nit picked the tiller not wanting it to fail and now it weighs 30#@26. Unacceptable. So being as that it is 70 inches long, I'm gonna pike it. This stick will be at least 40# at 26 inches ot it will be forge fuel. To the band saw!
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Gutsy. Nice work.
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With 2.5 inches removed I am now at 30@23. I am adding some heat to the limbs to bring the tiller back around beacause piking changes the tiller. Tillering with heat adds strength rather than scrapping the strength away with a scrapper.
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It popped a splinter. Right at the pointy end of the key hole towards the handle. I am certain I can save it though.
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Well two inches only added 3 pounds. 33@26. Lets take another two off and see if I'm left holding a bow still. By the way, I lifted the spliner up and loaded it with locktite gel super glue. Seems to be holding. I am taking pics along the way and will add them later.
I should add this bow had 0 set. I now have 3/4 inch of set. Wood is starting to feel some stress now.
Another update.... it sits right now at 35@26 64 ntn. Shortening it threw the tiller all kinds of funky. Heat treating the weak spots alone couldn't handle the task so material had to come off. So I'm now trying to figure out, should I drop down to a 62 inch bow? Its still whipish in tiller, I have popped one splinter so far, and as of now, its still a bow. Problem is, its not the bow I want it to be... decisions decisions...
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Wow Sleek!! That stick is makin ya use all your skills... and prolly teachin ya some new ones, lol... Goodluck, lookin forword to more pics.... Brian
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Have you considered Toating the Belly?
Even with the TB III in there, toasting make take the TB III above the threshold of release to
The double tough stage?
Belly toasting Osage typically has net 8 to 10 pounds for me...
-gus
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I have toasted it several times. And it did bring the weight up but with being a perfectionist on the tiller for this bow, weight has been lost due to having to do some scraping. Tight bond doesn't seem to be affected by belly tempering heat by the way.... after it cools it still seems strong.
( Pardon my insult to the English language, I was typing on my phone and auto correct likes to invent its own spelling. )
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Here is the splinter with the file pointing to where it ends, and then showing from the side where I lifted it up to fill in with glue.
(http://i1092.photobucket.com/albums/i411/rocketernally/20130825_034312_zpsf5744151.jpg) (http://s1092.photobucket.com/user/rocketernally/media/20130825_034312_zpsf5744151.jpg.html)
Again here the little round file points to the splinter. This is a side view
(http://i1092.photobucket.com/albums/i411/rocketernally/20130825_034839_zps7e9d71d2.jpg) (http://s1092.photobucket.com/user/rocketernally/media/20130825_034839_zps7e9d71d2.jpg.html)
Here is the tiller as she sits right now,
(http://i1092.photobucket.com/albums/i411/rocketernally/20130825_131808_zps40f0a006.jpg) (http://s1092.photobucket.com/user/rocketernally/media/20130825_131808_zps40f0a006.jpg.html)
I have no idea what to do with this from here. I have several options. First one that is just screaming at me is to leave it be. But I just barely have an inch of set, string angle isnt at 90 degrees yet, and I am not at 40 # yet.
So pike another inch off, try to eek a bit more stiffness out with another heat treat, or flip the tips a bit for more limb strain, or glue on some high rising tip overlays to try and cheat a higher string angle. Opinions?
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Like you said Sleek, sometimes it just wants to be what it wants to be...that being said I'd go with even heat on those limbs and a slight flip at the ends, with some overlays...but I'm pretty crazy. Maybe pike it way down and sinew that beast!
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Im sure you can eek more out of her....but... If your gut feelin is to let her be, I would listen to your gut ;)... To many times in life I have ignored my gut feelins and it never ends up good, lol... On the flip side it aint my bow and I would love to see how far you can take it. >:D >:D... Brian
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Eh....keep going.....I need a good new toothpick >:D
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I think I will press on. Cant chicken out after drawing a red line in the sand can we now? :D So rather than take it down another 2 inches, I think I will just flip the tips mildly. The upper limb will make things interesting because it forms a complete S inside about 7 inches. Never flipped a character tip before. Hopefully I gain the last few pounds I seek. I could be wrong but I think this bow is asking for sinew. But backing a bow with a hole is cheating isnt it? Not to mention I have no interest in sinew, though this bow does keep the thought in the back of my mind.
Blackhawk, you may get to see a toothpick yet out of this one...
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Based on experience, how much set will osage take before it gives up and breaks on an overstressed design with perfect tiller and wood?
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So I drew it back again today to 27" and heard it tick loudly. I took the wrap off and sure enough, that same splinter opened up. So I pried it up and out of there with a pocket knife completely peeling the splinter out. I then took sand paper and blended the gash around the edges very smooth and round. I also faded the entire length of the splinters gash it left gently back into the back of the bow. The fade is about 3 inches long. I went with the idea of a scarf joint. The longer it is per its depth, the stronger it is. I have pulled it several times back again and she still holds together. I will heat treat more soon. I need to stiffen the spot under where the splinter was, thn will most likely recurve it. Pics up soon, my phone bat is dead right now.
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Mid limb out to the tips is stiff on both limbs.
Shortening it over and over again is only increasing strain because obviously it isn't getting any wider. Recurving the tips will achieve the same thing.
Your weight isn't going up because the belly cells are getting crushed due to the strain increasing.
Heat treating will really only increase the weight once in my experience. That's why it's really important to get perfect tiller early then heat treat as soon as there is any set at all (generally 5-6 inches off full draw maybe a little earlier) to get the most benefit.
Good luck ;)
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Looks fine to me. Nice! Thats one crazy knot!