Trad Gang

Main Boards => PowWow => Topic started by: Flinttim on April 08, 2008, 07:07:00 AM

Title: Questions about building tri lam wood bows
Post by: Flinttim on April 08, 2008, 07:07:00 AM

I have it in my head to make a tri lam or even quad lam bow next Winter and have questions. BBOs HBOs and selfbows are my experience up to now. I have plenty of osage lumber and am thinking either bamboo back with osage core and bamboo belly and some accent wood thrown in or  hickory back , osage core and hickory belly. Maybe do the hickory first as a test run for practicing the glue ups.
 Anyway, the questions. Is tillering down mostly by mathematics , ie: figuring the tapers of the woods and the width of the limbs to achieve weight and draw length ? I know it would be on one with a bamboo belly but on one with a hickory belly can you get some tiller wiggle room by scraping the belly ?
 I would appreciate some feedback from anyone who has made such a bow,like dimensions of the wood used, type of wood , etc etc. I figure if those numbers are out there it would be better than me trying to reinvent the wheel. I looked around the TradGang site for a build along on this type of bow but did not see one.

Title: Re: Questions about building tri lam wood bows
Post by: wingnut on April 08, 2008, 08:37:00 AM

Tim,

You can tiller some.  However the best bows will come when the math is right and very little tillering is required.  Pick up a copy of TBB4, our chapter has a build along that covers this bow pretty well.

Mike

Title: Re: Questions about building tri lam wood bows
Post by: Pat B. on April 08, 2008, 08:46:00 AM

Mike, where can one buy TBB4?

I'll look at 3R's.

Title: Re: Questions about building tri lam wood bows
Post by: razorsharptokill on April 08, 2008, 11:12:00 AM

Mike has them too. Got mine at OJAM.

Title: Re: Questions about building tri lam wood bows
Post by: Flinttim on April 08, 2008, 11:42:00 AM

Thanks Mike, I've been meaning to get that new edition. Got to keep my collection up to date.