Primitive Archer

Main Discussion Area => Bows => Topic started by: barney on May 08, 2011, 02:47:35 pm

Title: New Horn Sinew Composite
Post by: barney on May 08, 2011, 02:47:35 pm
Hi there.

This is the first I've gotten round to fiishing this year.

It's 44 inches nock to nock. Around 42-43lb at 28''. The core's bamboo and hickory. The red tips and handle laminates are Paduak.

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740713.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740715.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740714.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740716.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740717.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740720.jpg)
Title: Re: New Horn Sinew Composite
Post by: dbb on May 08, 2011, 02:58:37 pm
Cool bow and very nice details,that padouk really glows.
And its not often you see thumbdraw,very "in character"!
Just have to ask,how do you tiller one of those? That cant be easy.

/Mikael
Title: Re: New Horn Sinew Composite
Post by: bubby on May 08, 2011, 03:03:40 pm
wow, that' a beauty, I really like those styles of bows, Bub
Title: Re: New Horn Sinew Composite
Post by: Arrowind on May 08, 2011, 04:05:54 pm
Awesome! Very very nice.  I'd really like to learn how to make a bow like that.  I love the design.  Good work!
Title: Re: New Horn Sinew Composite
Post by: JW_Halverson on May 08, 2011, 04:08:21 pm
That's one curvaceous, sexy, lust-inciting peice of work!

Niiiiiiice.
Title: Re: New Horn Sinew Composite
Post by: toomanyknots on May 08, 2011, 04:15:04 pm
Such a piece of art. Man.
Title: Re: New Horn Sinew Composite
Post by: gstoneberg on May 08, 2011, 04:26:25 pm
Great bow, wow that is some serious bend.  Looks great.

George
Title: Re: New Horn Sinew Composite
Post by: sharpend60 on May 08, 2011, 05:34:51 pm
Sure is beautiful, how does it shoot?
Title: Re: New Horn Sinew Composite
Post by: billy bowmaker on May 08, 2011, 05:51:46 pm
i love it.  it came in very low weight for a horn/sinew composite.  can we have some specs, please?   type of horn/thickness...layers of sinew...bladeebla

thanks
Title: Re: New Horn Sinew Composite
Post by: barney on May 08, 2011, 07:00:38 pm
Thanks for the kind comments.

To answer some of your questions, the tiller is achieved through very gentle scraping of the horn and the targeted application of heat.
I wasn't going for monster poundage as 40lb is about the max I can shoot with a thumb release. Finger release can be a problem with a short bow like this because the high string angle means a lot of finger pinch.

There's three layers of sinew (red deer) on the bow with the horn laminate (water Buffalo) being around 5mm thick in the bending section of the limb. The glue was a blend of hide glue and Isinglass. The back of the bow has been covered in leather - again, this was bonded with animal glue.

The bow seems fairly fast so long as you're shooting light weight arrows. Being short it's twitchy though and exaggerates any errors in shooting technique.

best regards,

Barney
Title: Re: New Horn Sinew Composite
Post by: RyanY on May 08, 2011, 07:15:19 pm
Very cool bow. Almost sythian looking and looks very well made. Beautiful bow.
Title: Re: New Horn Sinew Composite
Post by: mullet on May 08, 2011, 07:23:47 pm
Very pretty bow. What is the draw length?
Title: Re: New Horn Sinew Composite
Post by: aero86 on May 08, 2011, 09:25:55 pm
i love the bow!  im actually looking for a bow at just that draw weight, care to send it to me for "extended testing"??  lol!  i do just love composites!  did you have any particular style in mind? or just put something together..  you have more in the works?  also, how do you prepare a bamboo core?  im really interested in that.  ive a few pieces of bamboo i harvested that im wanting to use as core/belly material, but i dont have a clue on how to prepare the core.. 
Title: Re: New Horn Sinew Composite
Post by: ricktrojanowski on May 08, 2011, 10:03:53 pm
Great craftsmenship.  That is one impressive bow,  You did a great job.
Title: Re: New Horn Sinew Composite
Post by: Scowler on May 09, 2011, 10:00:24 am
Awesome looking bow, and it does look Sythian.
Title: Re: New Horn Sinew Composite
Post by: james parker on May 09, 2011, 10:07:55 am
very nice bow barney,,what is the physical weight of the bow?
Title: Re: New Horn Sinew Composite
Post by: Pappy on May 09, 2011, 10:40:36 am
Beautiful bow,very nice job. :)
   Pappy
Title: Re: New Horn Sinew Composite
Post by: ErictheViking on May 09, 2011, 01:38:11 pm
Gorgeous bow. beautiful lines and sweet full draw.
Title: Re: New Horn Sinew Composite
Post by: barney on May 10, 2011, 02:11:12 pm
Some more answers:

The bow is 15oz in weight.


The bamboo laminate was taken from a 5’’ diameter pole. It was thinned on the inner side; the outside just had the nodes and rind scraped down. This, with a same dimension lam of hickory sandwiches a pre-fabricated handle laminate and two wedges to thicken the 'Kasan' section. Bamboo laminate on the back; Hickory on the belly. These components were next glued together on a form to give the curvy shape.

THe following pics are from adiffernt bow, but the process is the same.

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740451.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740453.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740458.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740460.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740464.jpg)

(http://i489.photobucket.com/albums/rr254/barneyrabbit/SL740463.jpg)

Sorry but my camera broke after this stage.

The ears were spliced in next , then the laminates of horn attached , followed a couple of weeks’ later by the first course of sinew. Another two weeks and the second course is added and the bow pulled into increasing reflex.

Cure for a minimum of six months, add some additional hickory and paduak lams/overlays to the handle (back and belly).  Apply sinew wrappings to the stress areas, peg in some string bridges and tiller/ balance, narrow tips, etc.

Finally cover with leather, and again wrap the stress areas, in this case with waxed cotton cord. Apply finish.
Title: Re: New Horn Sinew Composite
Post by: Barrage on May 10, 2011, 05:01:22 pm
Looks great Barney.

Do you glue the horns on using the form as well?  How far into the handle and tip does the sinew extend?
Title: Re: New Horn Sinew Composite
Post by: barney on May 11, 2011, 02:28:00 pm
Once the wooden core is assembled I now longer use the jig.

Sinew covers the whole back of the handle and finishes at the tips where the splice ends. The sinew is laid progressively thinner in the non working sections approaching the tips.

Barney
Title: Re: New Horn Sinew Composite
Post by: JBL on May 14, 2011, 12:02:48 am
BRAVO!!!!  As someone else mentioned it looks like a Scythian style.  Too Cool.
Title: Re: New Horn Sinew Composite
Post by: IndianGuy on May 14, 2011, 12:38:24 pm
Barney, I can really appericate the skill, patience and time you took to make this bow. Very nice work you did on this piece. Thank you for sharing it.

Eric
Title: Re: New Horn Sinew Composite
Post by: blackhawk on May 14, 2011, 12:58:49 pm
That is some top shelf bow porn right there.  ;D
One of these days im gonna attempt some type of horn bow style. Yours looks awesome!!!!
Title: Re: New Horn Sinew Composite
Post by: dragonman on May 14, 2011, 09:10:03 pm
Really cool looking bow, looks very well made, well done thats quite an achievement.
Title: Re: New Horn Sinew Composite
Post by: aero86 on May 14, 2011, 10:32:12 pm
thank you for the picture of the joints.  that really helps me!!
Title: Re: New Horn Sinew Composite
Post by: bolsjedyr on May 20, 2011, 06:21:26 pm
Well I just love the composite hornbows and this one is sure nice :)
There's something fascinating about a bow made of natural materials that can take so much bend.
Title: Re: New Horn Sinew Composite
Post by: Lee Slikkers on May 20, 2011, 08:22:31 pm
That is some top shelf bow porn right there.  ;D

 >:D ;D O:) ;D >:D