Trad Gang

Main Boards => The Bowyer's Bench => Topic started by: Zradix on December 23, 2013, 11:48:00 AM

Title: tri lam horn tips
Post by: Zradix on December 23, 2013, 11:48:00 AM
Hi guys..

Quick question..

On a trilam..when you add horn tips, do you grind the taper through the belly lam?

With my bbo I left the belly 3/16" or so thick under the horn.

My tri lam belly lam will only have about 5/32" thickness at the tips at glue up.

The total thickness of all 3 lams will be 5/16"-11/32" at the tips.

Just curious how you guys would deal with it....does it really matter?


Thanks
Title: Re: tri lam horn tips
Post by: Pat B on December 23, 2013, 11:53:00 AM
I'd just be sure there were good mating surfaces. You can just flatten the back to match the overlay and glue them. I like to use rubber bands to clamp tip overlays after gluing. I get good, even pressure and a good glue line.
Title: Re: tri lam horn tips
Post by: Bowjunkie on December 23, 2013, 01:39:00 PM
Pick the angle you want/need to suit the bow's profile and your desire and grind away... I always grind through all layers of a tri-lam.

I then prep all gluing surfaces by gouging/roughing them up with a toothing plane iron, ran parallel with the limb's length... horn, same way. Smooth On.... spring clamps...lamp with a towel thrown over it for heat. Done.
Title: Re: tri lam horn tips
Post by: Zradix on December 23, 2013, 01:42:00 PM
Cool man!

Thank you.

Really just wasn't sure if It was smart to go through all layers and not have a "backer" left on the belly.
Sounds like it'll be fine.

...now if my wood would show up...lol
Title: Re: tri lam horn tips
Post by: Bowjunkie on December 23, 2013, 02:06:00 PM
Yeah, if you do everything else right, you wont have a problem. I've never had one come loose, not even a little bit. Since it is ground at an angle, it will still be pulling down on the belly lam.... all of them actually. I'd post pics, but don't know if I can on my phone here.
Title: Re: tri lam horn tips
Post by: Bowjunkie on December 23, 2013, 02:18:00 PM
(http://img.photobucket.com/albums/v312/Jeff_Durnell/Rose_Lioness/Rose.jpg)

  (http://img.photobucket.com/albums/v312/Jeff_Durnell/Wild%20Thing/WildThing13.jpg)
Title: Re: tri lam horn tips
Post by: Zradix on December 23, 2013, 02:24:00 PM
Oh cool!

Thanks Jeff.
Boy you really leave quite a bit hanging out there.
I woulda been afraid to do that...happy to know I can!

Do notice the grooves are lined up above the belly wood though..makes sense to me.

Man I'm excited to get started with this one!

Thanks again.   :thumbsup:
Title: Re: tri lam horn tips
Post by: Zradix on December 23, 2013, 02:29:00 PM
Last time on my bbo I did like this...
(http://i748.photobucket.com/albums/xx121/Zradix/bbo1/tip.jpg)

Knowing you can have a little overhang opens up some possibilities....   :thumbsup:
Title: Re: tri lam horn tips
Post by: Roy from Pa on December 23, 2013, 02:34:00 PM
However you want them to look...

   (http://i47.photobucket.com/albums/f165/ROY-CHRIS/atrilam2.png) (http://s47.photobucket.com/user/ROY-CHRIS/media/atrilam2.png.html)

   (http://i47.photobucket.com/albums/f165/ROY-CHRIS/26.jpg) (http://s47.photobucket.com/user/ROY-CHRIS/media/26.jpg.html)

   (http://i47.photobucket.com/albums/f165/ROY-CHRIS/pearl5.jpg) (http://s47.photobucket.com/user/ROY-CHRIS/media/pearl5.jpg.html)

   (http://i47.photobucket.com/albums/f165/ROY-CHRIS/IMG_7258.jpg) (http://s47.photobucket.com/user/ROY-CHRIS/media/IMG_7258.jpg.html)
Title: Re: tri lam horn tips
Post by: LittleBen on December 23, 2013, 09:42:00 PM
QuoteOriginally posted by Bowjunkie:
 (http://img.photobucket.com/albums/v312/Jeff_Durnell/Rose_Lioness/Rose.jpg)

   (http://img.photobucket.com/albums/v312/Jeff_Durnell/Wild%20Thing/WildThing13.jpg)
I don't mean to hijack but how about some more pics of that bow! Looks like alot of reflex. Veyr cool.
Title: Re: tri lam horn tips
Post by: Roy from Pa on December 23, 2013, 10:19:00 PM
Ben, trust me here. Bowjunkie makes sissy pants bows:) LOL

But they are perfect, flawless, and beautiful shooting bows.....
Title: Re: tri lam horn tips
Post by: Bowjunkie on December 24, 2013, 10:27:00 AM
(http://img.photobucket.com/albums/v312/Jeff_Durnell/Rose_Lioness/Rosename.jpg)

Ben, the top bow with recurved outer limbs is a bamboo backed yew I made in '04. Her name is Rose :^)... not a tri-lam, but rather, a solid yew slat that was kerfed the last 12" or so of the limbs, and then a 12" long yew lam was inserted into the kerf, which allows it to be quite flexible during glue-up and afterwards, really 'maintains' the recurves... less prone to 'pull out' with use over time.

 (http://img.photobucket.com/albums/v312/Jeff_Durnell/Rose_Lioness/Rose2.jpg)

She is 64" ntn and 65# @ 28". Trapezoidal crossection with a fully radiused belly... the boo and yew makes her feather light in the hand and does she spit an arrow... whew.

Sorry, I don't have a full draw picture.

 (http://img.photobucket.com/albums/v312/Jeff_Durnell/Rose_Lioness/Rosestrung_zps4f1c41d5.jpg)