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Topic Archives => Build Alongs => Topic started by: BillJ on January 07, 2006, 03:21:00 PM
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Started bow # 6 recently. It's basically the same as my last hickory bow ("Twisted Hickory"), made from another piece of the same hickory board. This one has a walnut glewed on handle, and I'm trying for 60 lbs at 28 inches. In its current state, it is pulling 60 lbs at 24 inches. I'm hoping for some help from this brilliant group of archers / bowyers, though, so I'm pausing for your input.
Here is the bow unstrung. Before I began working on it today, it had relaxed down to about 1/2 inch of set on both limbs:
(http://www.JohnsonAcres.com/images/bow_6/DSCF0002.JPG)
Here it is braced:
(http://www.JohnsonAcres.com/images/bow_6/DSCF0003.JPG)
Here it is pulled to 24 inches:
(http://www.JohnsonAcres.com/images/bow_6/DSCF0004.JPG)
And here it is pulled to 24 inches, but reversed on the tree:
(http://www.JohnsonAcres.com/images/bow_6/DSCF0005.JPG)
NOW FOR SOME QUESTIONS:
The following pic shows a small knot that has a tiny crack in it. This is just outside the fade, and the wood there is working a bit. Should I be concerned with this?
(http://www.JohnsonAcres.com/images/bow_6/DSCF0006.JPG)
The following 2 shots show the grain on the back of the bow in the end third of each limb. There is some runout on the one. Should I be concerned about this? I was hoping for an unbacked bow, but I'm thinking about backing it due to this. Opinions?
(http://www.JohnsonAcres.com/images/bow_6/DSCF0007.JPG)
(http://www.JohnsonAcres.com/images/bow_6/DSCF0008.JPG)
Finally, here is a pic of the set after working it a bit at 24 inches. As I said earlier this relaxes to about 1/2 inch after a while. I'm guessing the set it due to moisture, and am in the process of building a hot box which should help with that issue.
(http://www.JohnsonAcres.com/images/bow_6/DSCF0009.JPG)
If you made it this far reading this lengthy post, thank you for your patience. Any advice / suggestions / criticisms are always appreciated!
Bill J
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Here's just my opinion
1. The right limb in the first pic is bending too much in the outer third, and not enough in the first third.
2. I wouldn't worry about that crack. If it does worry you, just fill it with superglue.
3. With those kind of runouts I would definitely back it. It could blow real soon without a backing.
4. That much set is expected. Actually I would say you are doing pretty good there.
Just my two cents
Nice work so far. Keep us updated :)
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1. I was thinking the right limb in the first pic was bending too far into the fade. I would work the middle third on that limb. The left limb looks good.
2. Super Glue.
3. Can you attach a pic of the grain on the limb edge or count the runouts on the edge?
4. Your not gonna reverse any set by drying it more. 2 inches or less is average I would think.
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Very interesting responses. This is one of the reasons I like this forum... it makes me look at things from varying perspectives. When I look at those pics of the bow drawn to 24 inches, I think the LEFT limb in the top photo (the RIGHT limb in the second photo) is the one that needs work, and it is not working ENOUGH at mid-limb. Interesting.
Thanks for the help guys.
Bill
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I think, personally, that most if not all of the confusion is from the "background distraction(s)."
Can you drop a sheet, and maybe that will let us (and you) just focus on the limbs? Just a thought, not criticizing at all, looking to help get you what you need as far as proper advice.
That said, I'll reserve comment until then! :bigsmyl:
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I'll second what tim clark saide
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That's qute a bit of run up on the back. I'd throw on some silk. Super glue the crack. If it gets larger do a silk or siew wrap set in glue. Tiller looks super. Pic is crooked. Time to think about a rope and pulley. Jawge
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OK... are you guys implying that my workshop is messy? I am cut to the quick! :scared:
Actually, I've been thinking about some kind of backdrop for the shop. I recently built a new shop and am just getting stuff moved in there. I'll try and take some more pics with less "distractions"!
Thanks for the feedback!
Bill J
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No, Bill, as I said, no criticism. My point is that we're seeing multiple geometric shapes in various and manifold stages of confluence and congruence in proximity to each other and our human visual capacity cannot adequately separate them sufficient to enable discriminating cognition as they transition from a horizontal planar relationship into one of dual descending arcs, thereby further handicapping our limited abilities in ascertaining the most appropriate response to your question.
:readit:
In other words, give us a damn sheet for a background. Or a board with defined squares so that we have a sense of proportion and perspective. And clamp the bow horizontal.
:bigsmyl:
Oh, and one more thing -- DO WHAT JAWGE SAID ABOUT A ROPE AND PULLEY!!!! We'd kinda like to keep you around, with all your body parts intact. And besides, who'd finish the bow for ya if you shot your eye out?!?!
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ROTFL!!! Mr. Clark, that is some of the best manipulation of English verbocity I've ever read!
I shall endeavor to provide the proper backdrop tomorrow. And the rope and pulley is on the list of things to add to the new shop.
I appreciate the feedback... and I'll be chuckling at your turn of phrase for some time!
B
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Actually, if you use those items in the background as reference points, the limbs bend mighty evenly. They come to the same points on those water pump pliers and the little saw at right.
I would be concerned about those runouts, though I have hickory with that kind of runouts the length of the limb and it hasn't blown. (But I do worry about it!)
JIm
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Hello, BillJ - have you had a chance to work on that bow?
Just checkin' in on ya - hope you've had time to enjoy it.
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Actually, I've been buried at work the last few days and haven't had time to get back to it. :(
Hopefully, I can make some progress in the next couple of days. I'm hoping to be in the woods on Saturday, but when I'm not doing that, I'll try and hang that sheet for you and get back to tillering!
Thanks for the interest!
B
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My only observation is your shop is too clean.
Dan C
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Yeah, my shop is never the clean.
Seriously, get some backing on it soon.. :D
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ya know that the tiller stick is not doing your bow any favors either. and if you think that it is still wet DON'T bend it any more!!!
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Is that like the Old Saying "A Messy Cook, is a Good Cook", "A Messy Bowyer is a Good Bowyer!" :thumbsup: Makes sense to me, if yer gonna play, ya gotta make a Mess! :D Good Looking so far, I am following here, hopefully do the same soon!
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OK... no real updates on this, as I haven't had time to do anything with it. However, I have a question. I was at Lowes yesterday, and saw 2 inch wide strips of Oak veneer. I picked one up, thinking it might work as a backing on this bow.
Has anybody tried these veneer strips as backings? Anybody want to stop me before I give it a try on this hickory board bow? My other thoughts were either brown paper bag, or drywall tape. Trying to go as cheap as I can on this particular bow.
Thanks!
Bill J
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How thick those veneers ??
curious to hear what the experts have to say.
Manny
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Manny,
They are very thin. I don't have it in front of me to give you the exact measurement, but they are thin. I figured it would be thicker than paper or drywall tape, but not a whole lot, and it would look so much nicer if it works.
Bill J
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:knothead:
Anybody have thoughts on my using veneer for backing this bow, before I head for my messy shop and ruin another bow? If not, I shall forge ahead and post the results in a few days. I'm sure it will be a smashing success! :help:
Bill J
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Sorry. Never used it. Have used silk,burlap and rawhide.
Jawge
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Bill J, veneer can be weird stuff as far as grain orientation. Is it possible for you to post some good pics of the veneer? I'm pretty sure I know the type you're referring to, it's available at a couple of local hardware stores here as well. But, no use second guessing.
Also, does the veneer have adhesive on the back? Sometimes, it's not what you want it to be. Lots of variables when you don't know what the glue is.
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Yes, this veneer has a pre-glued backing. I was going to ignore that and just use Titebond II. I'll try and post a pic shortly.
Thanks!
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I think it would be best to wait for other comments besides mine. I am not certain that the TB2 will make any difference, in the respect that the other glue is present and is, therefore, the adhesive that will be the weakest link. TB2 isn't going to over-rule or displace that existing adhesive. Think of it this way - it's almost the same thing as having paraffin on one board that you want to glue to another. Will it work? No, I don't think so. Yes, I am aware that paraffin isn't a glue, but in this case the same principal applies. I don't think it'd be a good bond. At all.
That said, I don't know if the unknown adhesive can or even should be removed. Can it be? Probably, maybe acetone, maybe adhesive remover as long as it doesn't leave residue behind that make things worse than the adhesive did. Should it be removed, or will it damage the veneer's integrity in the process?
I would strongly suggest that you take a small piece of you r base wood and a small piece of the veneer. Try a glue up the way you intended. Do another mini glue up with just the veneer. Then another with the adhesive removed, as many ways as practical for you, and see how the veneer holds up, then apply just the TB2. In all cases, make it so the the pieces can bend through a simulated drawn arc after they're dried or cured so that you can tell if it'll hold up under that kind of tension.
A lot of tedious work? Sure it is, but how much worse would it be to get the bow somewhere along the process to completion and find out then that the chosen way was the wrong way?
Like I said, wait for a voice of authority. Mine is only giving these suggestions and you have to find out. Sorry, I wish I HAD tried some of that veneer myslef, that way I would be able to give you definite answers.
My two cents... which may not be worth quite that much.
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Just to go against the wind, I wouldn't back that bow.
Hickory will allow one heck of a lot of runout without trouble. I have a 67" hickory bow that's too narrow (1 1/4"), badly tillered (too much bend at center limb) and that I draw to 57 pounds at 29 inches. It has runout at least as bad as yours, only covering the entirety of BOTH limbs.
The bow is going on three years old now. No problems at all.
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I agree, Jeff. I guess I got so caught up in answering the veneer question that I lost sight of the big picture.
BillJ, the choice is of course yours, but given that you're not exactly a novice I think that you'd be fine to leave it unbacked.
If you want to experiment with the veneer, I'd suggest the same as my comments above.
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Here's an idea on the veneer, if you are set on backing the bow....
Flip it over. Use TB2 to glue the clean side to the stave, then use acetone to clean the pre-glue junk off after everything sets up. No worries about glue incompatibility that way.
Worst case, you can always sand off the pre-glue to get a finishable surface.
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If the back has not started to lift a splinter yet you may not need to back it, but it doesn't take much of a backing to keep it from lifting splinters. I've used tissue paper with success, you don't need much.
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I was thinking that too, Jeff, except I got to wondering if the acetone would have a deleterious effect on the TB2. I know it's "supposed" to be inert once cured, but the thing that bothered me about it is that the danged veneer that BillJ is talking about is extremely thin - you can see light through it - and I'm wondering if it wouldn't possibly saturate the backing and cause failure. Just a thought.
Dano, I'm new to backings (at least on bows), and it amazes me that tissue paper can have such an effect as that. I suppose it is a "single ring" though, huh? :p
Hey, BillJ, looking forward to reading about your next move! :bigsmyl:
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Well, acetone flashed off so quickly that you qould have to really go overboard to even wet the veneer, much less saturate it.
Applied to a rag and worked with a bit of elbow grease, I'm not sure you could force it through the veneer before it evaporated.
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I appreciate all the good feedback. After reading the responses, I'm going to go ahead and try leaving it unbacked.
Here are some new pics, this time with the sheet finally hung behind it for Mr. Clark's sake. :D
Here it is braced.
(http://www.johnsonacres.com/images/bow_6/DSCF0010.JPG)
And in this pic it's pulled to 25 inches.
(http://www.johnsonacres.com/images/bow_6/DSCF0013.JPG)
So, what do you guys and gals see? The bow is pulling about 45 lbs at 24 inches right now, and I'm targetting 50 lbs+ at 28 inches. After I worked it a bit on the tree this afternoon, I shot about a dozen arrows through it. After that, I unstrung it and it showed about 1 1/2 inches of set, which is about what I've come to expect, I guess. I put it back in the hotbox, and looked at it a few minutes ago after it had been in there for several hours, and the set is greatly reduced... again as I expected.
Just looking for tillering comments, I guess. Any advice is as always appreciated.
Thanks!
Bill J
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Looks like the right limb is a little stiff at mid limb.
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Thanks Dano. Appreciate the feedback. I thought that side looked a little stiff, too, but I thought it was stiff about 8 inches out of the fade (right where that cord hanging from the shelf above is pointing), and about 8 inches from the tip. However, that tip is the one where the grain runout is, so I've been hesitant to get it bending too much. Do you think I should go ahead and try to get the tip bending a little more?
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Just my two cents, but I think that the stiffness in the right limb may not be as bad as it looks in the photo due to the shadow making it look that way. I had to use some "mental whiteout" to see it.
What I do notice is the left limb seems to have a somewhat/slightly sharp start right off the fade at the end of the handle. It otherwise has a nice arc to it, which at first drew my eyes away from that spot.
Thank you for the sheet, I suppose that since it's in my "honor," I get to name it? How about, "Senator Byrd?" (He used to wear a sheet back in his Klan days! lol!)
Oh and hey -- look at that!!! All those power tools that you put up on the shelf? Well, take a close look now, and you'll see that a few of them have their little cords hanging over the edge to get themselves an admiring view of your work! :bigsmyl:
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BTW, that's a terrific looking brace profile. Very nice.
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Nice arc, hard for me to see much wrong in it :knothead:
Did you think about tempering the belly ? to figth the set ?
Manny
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Tim - I agree that this bow looks to be bending a little too quickly out of the fades. I did the same thing on the last bow, and I thing that might be a major contributor to the set it took, and this one is taking.
Manny - I have been reading your posts about belly tempering. Interesting. Do you think it is too late to apply it to his bow? It is pretty much in the final stages of tillering, I think.
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Did you read Timo's HHB thread ?
I thinkhe was at the shooting stage, and look what a recovery.
Just read a thread by Steve (Badger) He rescued an old mulberry with 4" of set, after belly tempering and retillering, the bow is even , no set.
I was able to get rid of more than 1" of set on old bows that shot 100's of arrows.
Yeah you still have plenty of time, remember that tempering the belly probably will put about 10# back on that bow.
If you need more info, just ask, and if I can help I will, if not I'll refer you to more experiaced bowyers in the matter.
Manny
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Bill, I just saved a 58" osage with this method.badger and I have been discussing this on my thread "century stave 58".(page 2&3)He states that he hasn't had the best results with this method, on hickory.
Tiller looks well. I'm with Tim Clark about the shadow lines.
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Hey, Bill - the more I look at that left fade, the more I think that what I may be seeing is the fade, itself, angling out a bit toward the camera. I just can't quite tell. If that's what it is, then I'd say you've got it nailed, quite nicely.
You do very nice work, Bill. I hope you keep at it always. Plus, you're a good (great? lol!) sport, keeping things on a light note. More to being that kind of person than meets the eye, and my hat's off to you.
..well, if I was WEARING a hat, that is.... all the same, well well done.
And no my fingers didn't stutter. :bigsmyl:
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About this belly tempering... I've searched the archives and seen that some use a heat gun, and some use the red hot coals from an open fire. I assume then that I could use a propane torch if I were careful. My understanding from what I've read is that I would not want ot scorch the wood with the flame, but rather let it get hot enough to eventually turn color.
I may try that on this bow just for giggles. I also have my "Twisted Hickory" bow that I hunted with all season. I'm a little peeved at it since I didn't get a deer, and I'm sure it's the bow's fault, so maybe I should heat it up a little. It's taken a couple inches of set as I've shot hundreds of arrows through it. It is finished in TruOil. Would it be a candidate for heat tempering?
Thanks, as always for the help you guys and gals provide.
B
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I guess Propane would do.
I would be scared of using it however !!!
Marc says, 5 minutes at 4 inches with a heat gun at high.
I think a heat gun gives you more control, remember that to do both limbs properly takes quite a bit of time.
Manny
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I just emailed a story on "flaming" to Badger.I had a friend that remembered reading about it in an older "instinctive archer" mag.He looked it up and sent me a linc.
He used a propane torch.
I used a industrial heat gun.I suppose I'd not like watching the elec meter,while doing it, as these guns pull alot of amps. Be prepared to stand a while,and switch arms regularly.Also keep the gun moving,for more even heat.
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Timo - any chance I can get a copy of that email?
BillJ
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I'll send it to ya Bill.
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Took it out of the hotbox tonight, where it had been for about 2 weeks. Cleaned up the nocks a bit, and worked it a little on the tree. Then I shot about a dozen arrows through it. Felt great and shot fast - faster and harder than my other hickory bow. I weighed it and it came in pulling 64 lbs at 28 inches, so I was pretty pleased.
Then I thought I'd put it back on the tree for one more look at the tiller. Pulled it to 28 and in a spectacular display, it ended up like this:
(http://www.JohnsonAcres.com/images/bow_6/DSCF0015.JPG)
It blew right where that little knot / crack was, so I guess there was just a weak spot in the wood there. Is it possible, though, that having it in the hotbox for 2 weeks simply made it too dry?
Regardless, I shall try again! Once more into the breach! I have some walnut I'm going to have a go with, as well as some more hickory. I also have an osage stave that 4nolz sent me a while back and I've been trying to get my skills up to where I feel comfortable tackling that.
So... thanks for all the help on this one guys and gals. May she rest in peace (or is that pieces?)
Bill J
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Yeah, surprisingly, even hickory can get too dry.
Sorry about that Bill. But as she "smoked" the arrows, perhaps now she can smoke the meat?
Try again with hickory. But I'd also suggest getting going with the osage. I've just recently come into possession of some, and from the looks and feel of this osage bow from Linc, I am now about to unashamedly concede that I am in fact quite obsessed with the wood. Simply remarkable what it can be made to do, and it does so without complaint.
I'm glad to see your spirits are up and that your attitude is right. Imagine what we'd go through - or not even attempt - without the comraderie of this place?
Good for you, Bill, good for you. Any dead fish can float downstream - winners keep heading up.
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Bill, tough luck on that. I know you worked hard on it. I've found that boards have to be pretty flawless with no knots and few run ups when unbacked. I had a hickory board break at full draw right a tiny know and I was drawing it.There's info on my site. I'm curious as the why it was in a hot box. Also, I think you'll find a rope and pulley a bit easier on the bow. Jawge
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Tim- thanks for the encouragement.
George - As the pieces of hickory helicoptered around my ears, I was remembering all the times guys on this board have told me to go with the pulley system. I shall definitely move that up on my priority list now.
As for the hotbox... well I thought that was the thing to do. My last hickory board took a couple inches of set, and I thought moisture might be the problem. I've read on this board where some guys leave their hickory bows in the hot box all the time, as hickory is just so liable to pick up moisture. Did I misunderstand that?
There is no question the wood in the area that broke is very dry.
B
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Your skills are fine.
Get that osage stave out and make a yeller bow.
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Bummer !!
Manny
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Hmmm... it's interesting the different perspective you have on things once you've had a night's sleep.
I looked at the pieces of this bow again this morning. The limbs are some of my nicest work! I hate to sacrifice them. Plus, I've been thinking of making a takedown.
Do you think I could salvage this bow into something like the one in this thread - Red Oak Take Down Bow (http://tradgang.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=1;t=022979#000013)
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Sorry to hear about the bow.
And thanks to mr.clark for my new sig.
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LOL, Lower! I'm honored!
Bill - Go for it. What have you got to lose? But, that said, maybe give that wood a rest, and give yourself one from it, for a little while. Pick up another piece that you've got nearby, hickory, black walnut, or osage, and get fresh again. Just some advice from my own experience with such things. NOT that I always follow my OWN advice, mind you... :bigsmyl:
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Bill, it sometimes is tough to let go. LOL. I sometimes will lay a stave on the radiator will working on it. Around here in NH wood picking up moisture in the winter has never been a problem. Out winters seem to be just roght re moisture for bow building. How yo treat your hickory in he winter depends on where you live. i think you are correct in that the knot did the stave in. Also, the grain was poretty bad evern for hickory. IMHO. You needed a at least a fiiber or cloth backing. Silk and burlap are quick and easy. One other thing - you asked a lot from a b oarde with such poor grain. it may have survived at 45#. Jawge
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Thanks, George, for the help. I'm still trying to learn what grain is good and what is bad in a board. I actually thought that one looked pretty good, except for that little knot area. Shows what I know, huh? As a matter of fact I have 3 other boards cut out of that same 5/4 board. I thought they all looked pretty good, but based on this experience, I think I'll back them.
I would like to see somebody who really understands grain as it applies to board bows do a pictorial on here giving examples of good and bad grain. I've seen a lot of examples that are hand drawn, but I haven't seen any where there are actual examples photographed and explained. Is there such a thing anywhere? If not, I would be willing to post pics of various boards and invite comment from those in the know. Perhaps it could then be assembled into something usable as a reference for the future. Any thoughts?
B
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Start another thread with photos and questions, Bill, and hopefully folks will chime in and help not only you but all to understand. Might also get some level of debate started, but that's not such a bad thing, eh? Good idea you've got there.
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Bill there is a picture of a boar on Board Bows on my site that I would consider close to perfect. I look at the edge first and then check the face. Straight grain is good. jawge