Hello, This is my first post,does anyone know if you need to put glass on a laminated longbow, hickory backing brazilian walnut core and hickory walnut riser. This is what I was wanting to do. I have made the form already it is for a reflex deflex style bow at 62 amo. Just don't want to glue this up, clamp,take off the form string and snap it in half this would be sad. The hickory is 3/16 and 3 lams of b-walnut one of the lams is really the belly wood
Cool, another interested in making bows. I,m not a glass bow guy. We do have some very accomplished glass bow makers up at the club. Talk to Dale or Steve Redden.
I'm trying to learn all wood laminated bows myself. I've made a few. If your gonna be at the shoot tomorrow look me or Tim up.
Ouch I made a few like that. That is a highly stressed area of a bow. How far did you get it drawn before it broke? Was it a 62" bow? Any flaws in your wood in that area? Is Brazilion walnut the same as Ipe?
Bring it to the next shoot so we can look at it.
From looking at the first three pictures, I can give you one bit of advice. Don't quit trying. You will make great bows.
I didn't even get it strung I put on a bow stringer and was less than half of an inch from strung when snap. The bow is 62 I just slow on the glue up and things were sitting up faster than I thought but did not think it would matter I guess but it did so better luck next time I have another in the form so we will see. Ipe is brazilian walnut I think ,but my hickory is the backing:)
What type of glue? I've been trying Tightbond 3. It does begin to set up pretty fast. Why are you using three lams of the ipe? If you only had one thicker ipe board with a hickory backing it might be easier to glue up.
Most people use backings that are 1/8th thick. I don't think that 3/16 would overpower the ipe though. I do think Tim will tell you that all ipe is not created equal though.
Your fadeouts look real good. Perhaps a bit longer bow would be easier starting out.
I always like to baby my bows when they start bending. Give them a lot of exersize. Eventually you can get a string on them. Bend them easy at first and watch for hinges.
titebond 3 is the glue and i just thought that the hickory and two lams of ipe then the fadeout would be good but not sure. the other limb on the bow would not break i tryed and after more looking found that the glue had sat up to fast before the clamping and my form needs a little help but.. the wife dont realy care for the form on my bed but hey its my second love
I think you are short for a non glass bow.For a 50 # bow I would figure at least 25" of working limb. 25 x 2 = 50 and throw in the riser and fades of about 14" and you have 64". This is minimum. Your fades are sitting on top of the limb core, and should be above the limb core. ie:, you make the core thicker and then thin the limbs to leave the riser and fades above the plane of the limbs. It broke right at the fades which means the riser has no working area. It's easier to show than explain.
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I do not seek the good of others as a sanction for my right to exist, nor do I recognize the good of others as a justification for their seizure of my property or their destruction of my life.- Hank Rearden
After further review of your photos, I think I was wrong and you were OK on the riser. It does appear to be correct. Must have been a failure of the backing right there. Did you work it any with a long string ? I use a string longer than the bow at first to check tiller before putting a short string on it.
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I do not seek the good of others as a sanction for my right to exist, nor do I recognize the good of others as a justification for their seizure of my property or their destruction of my life.- Hank Rearden
I am not sure, what i tryed to do on this first bow was just try to copy off of my longbow all my measurements, length, everything but the wood that i used was different and my bow has glass
I made the form, and got all the springclamps but did not plan on laminatin three peices,riser, with glue sitting up so quick ran in to time issues but thought it was glued properly but under close look it wasnot
Nope, you can't copy a glass bow into a wood bow. Those little strips of fiberglass do a lot more than you would think.
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I do not seek the good of others as a sanction for my right to exist, nor do I recognize the good of others as a justification for their seizure of my property or their destruction of my life.- Hank Rearden
Hey Turk. Them boys are right....sort of. I think I've heard how ipe comes in a lot of different qualities. A lot of people have had trouble with it over the years. When they first started using it they probably were importing wood that came from bigger older trees. Now they may be getting wood off 6" trees. This is just a theory on my part. I do know all ipe aint the same
Dale makes glass bows. Smooth On is the best to use on fiberglass to wood glue ups. Wood to wood glues are Resourcinal and Urac185. These are the time tested glues. Since they came out with Tightbond 111 a lot fo guys have had success with it.
All wood composits have a lot of steps that have to be done perfect to turn out good.
First of all make sure your design is correct for the wood, poundage, and draw length. Make sure your lams have no gaps, rough up the surfaces to be glued, clean or at least make sure they aren't contaminated with finger oils etc. Make a trial run in your form before glue up. Make sure your glue is not old. Have the right temperature in your room. Clamp pressure is fairly criticle, not too light, not too heavy. Leave on the form a plenty long time. After it comes off let it stay in a warm spot for a couple days. Saw out and check your glue lines. Fill any gaps with super glue. Let dry. Start floor tillering and watch for hinges. Take it slow and teach the wood to bend. Once you get a string on it give it plenty of exercise. Dont over stress. Sand, finish, and outshoot Tim at the next 3D. That's how I would do it anyway
Hey, great advice, see i really don't know if my bow was right or wrong on the length, weight ect.. i just started to build, looked good but, well I guess it has to work i'am back to it made a new riser and am now laming 2 hickory strips together with one ipe strip in the middle one hickory is the belly and one is the back see i wish i hade a web site that showed how much lbs. for certain strip thicknesses right now i am just shy of 7/16 ????
when you start making bows, make them twice your draw length plus the riser in length. IE: 28+28+10 for a normal guy on a bow with an 10" riser=66 inches minimum length.
After you've made a couple, you get a feel for it, and can shorten them some, if you want. Dennis is a very good information source for you since he's made so many, however when you pick his brain, you need to know that the buzzards have already been there....
just built another bow this one i had in the form and wanted to try some things looks like i just about have my glue joints smooth and most lines look slick just not sure on the riser were do you determine were the riser starts for the 10". This bow is as big as my form is 64" i'll have to make a new form to get a longer bow. Hickory is the main wood used, limbs are 1 1/8 at the widest and limbs are 5/16 thick. I made this one a little looser in the limbs and am taking it easy on the limbs working them ever little bit so... we will see if i ever string this one
Technicaly speaking the riser would be the non bending area. I noticed you have a lamination in the riser area that is up near the back. They call these power lams, I think. Make these 10" or 9" OR 8". I guess that would be your riser length.
That's great thanks, trying to sand the limbs and get a little more movement out of them before putting a string on so, id love to see some of you bows do you live in scottsburg or? Thanks
made a 66 inch longbow out of a bamboo flooring board 40 lbs aprox but would like to put a riser on one of these bows will a riser make the center stronger because now it feals weak and can here cracking but have shot over 50 times at full draw ?
hearing "cracking" isn't a good thing, but I suspect it is the string in the grooves, because 50 full-draw shots on a cracked bow would almost surely have broken it.
I can see some small splits in the limb but one guy said that this is what bamboo does not sure, when you shoot you here the cracking but is coming from around the grip area did not know if this thing would just crack right in the center do to the preasure or if a glued in riser would stiffen the center or not ?? maybe 6-8 inches of maybe bamboo riser not sure on a brace height on a bow like this, if any one knows a better wood to use for a selfbow like this one i woould love to try it thanks maybee if i made it longer ??