Main Discussion Area > Bows
BBO?
Lehtis:
Take a bicyckle inner tube, cut it lengthwise to two strips and wrap the stave with these. Tight rubber band gives proper compression, clamps may be easily overtightened and squeeze out glue; see the link.
http://www.primitivearcher.com/smf/index.php?action=dlattach;topic=69952.0;attach=159465;image
neuse:
Are you using epoxy for the glue.
Eric Krewson:
I agree with inner tube being as good as clamps and much cheaper. I started buying clamps when I first started making bows, people gave me some, If I found them on sale I bought more, I think I have about 50 now, I found the red ones at the el-cheapo tool sales are not worth bringing home.
Too much clamp pressure can cause glue starvation of the joint, after 26 years and at least 50 BBOs I don't have that problem, I do score the core and the bamboo with a toothing plane blade which cuts fine grooves and prevents starvation. I use Unibond glue for BBOs, I think the old Urac 185 was better but it is no longer made.
I also use clamping pads I made out of bamboo scraps that conform to the back of the bamboo and provide even clamping pressure. I flatten the back of the pad on a belt sander.
Lehtis:
For neuse: I do use Smooth-On EA40 (epoxy).
superdav95:
I used the same method as Eric with the contoured pieces of bamboo. I also use ea40 with good results. Only difference is I lined mine with leather.
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