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Main Boards => The Bowyer's Bench => Topic started by: Japes4 on October 09, 2014, 06:31:00 PM
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Attempting my first R/D bow and ran into an issue during glue up. The riser moved during the process and I didn't catch it. I am assuming that I chalk this up to experience and start over, but wondering if any of you know some miracle way I can fix this. (http:// [url=http://s817.photobucket.com/user/japes4/media/Mobile%20Uploads/20141009_180450_zpsuks9c8ya.jpg.html][IMG]http://i817.photobucket.com /albums/zz98/japes4/Mobile%20Uploads/20141009_180450_zpsuks9c8ya.jpg)[/url] [/IMG]
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With that style of form C clamp your riser in the center and work your bands from the center out working both fades at the same time.
Cory
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PS you don't have to scrap the bow. You can just shift your shelf down an inch or so and maybe leave the bottom limb a little longer and you will be able to tiller it out.
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My mistake was doing one side and then the other...not at the same time. Lesson learned. Just so I am clear (being a n ewb and all), move the shelf to the right a bit and leave the right limb longer as you are looking at the picture. Thanks for the help.
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Jason here is how I would do it maybe some of the other guys will chime in too.
I would cut my shelf on the bow where the center of the form is. Then measure out from the center of the form to find you limb tips. Measure out to a point where the reflex of the limb is of equal distance from the table. I would now add 1 inch to the length of the right limb ( bottom limb).
I looks like the riser shifted 1.5 to 2 inches and without making the bottom limb longer you won't be able to get it to tiller out.
Good luck
Cory
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Got it. I will give that a try. Thanks for your help and hopefully I will be able to post a pic of a finished bow sometime soon
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(http://i817.photobucket.com/albums/zz98/japes4/Mobile%20Uploads/20141009_180450_zpsuks9c8ya.jpg) (http://s817.photobucket.com/user/japes4/media/Mobile%20Uploads/20141009_180450_zpsuks9c8ya.jpg.html)
Agree with above Assesment , nothing to loose.
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What exactly happened here? It moved to the right when you clamped it together? Why did you do the limbs separately? Sorry trying to learn here..haha. Hope it works out for you.
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For this reason I always C-clamp the riser down firmly first.
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As stated start,clamping in the middle then move to each side working out toward each limb tip.
The first reason is what happened to yours.
The second is as the limbs are clamped to the form. Each layer has to shift as it is clamped to match the form.
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Wood, this was first time gluing up this type of bow. In my inexperience, I clamped the riser down at center and then started working on one side only. During this process, the riser was pushed over and I neglected to double check before moving to other side. Stupid mistake, but definitely a good lesson. Hope others can learn as well and not make the same mistake I did.
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Thanks for the explanation.
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I use rubber band forms all the time, and repeat what the others have said -- clamp the center first, then work one peg in each direction and repeat.
I use rings of innertube, not strips, and that makes it easier -- one left, one right, one left and repeat...
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Looks great to me, but I shoot asymmetric bows. Tiller the short limb a little lighter and put the long limb on top. If you thin the handle instead of cut a shelf you have a perfect ambidextrous horse bow. I'd roll with that on my chair.
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Thanks for everyone's input. After adjusting the bow and tillering, I was able to get about 6 shots in before it started to delam around the riser area on top limb. Chalk this one up to learning experience and move on to the next one.
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I'm bettin the riser didn't fit the form after sliding, so you couldn't get clamp pressure on it very well.
Good luck on the next, brother!
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Final update...was able to put some CA glue in the delam and thin down the limbs a bit to make a bow for the kids. Not the prettiest profile, but the kids don't seem to care. Birdseye maple with Brazilian cherry and hickory I beam riser.
http://i817.photobucket.com/albums/zz98/japes4/Mobile%20Uploads/20141012_164503_zpsug8c3eoa.jpg