Primitive Archer

Main Discussion Area => Bows => Topic started by: Easternarcher on December 15, 2007, 04:11:07 pm

Title: Boo backing for Hornbeam?
Post by: Easternarcher on December 15, 2007, 04:11:07 pm
Guys, I recieved a 5" log of hornbeam from a friend this fall, and I offered to make him a bow from it.
Well since I've never done a true selfbow with natural back( only backed bows so far), can I use bamboo to back a slat from this hornbeam, or would hickory work better?

I'm hoping to get two bows from this log and I want to be sure that the bow reaches hunting weight AND stays together!
I don't want this guy getting a gooseegg from my inexperience as a self-bowyer. Any comments?
 
BTW, Merry Christmas to all and a Happy NEw Year.
Title: Re: Boo backing for Hornbeam?
Post by: DanaM on December 15, 2007, 08:01:22 pm
I have never worked with boo but HHB is really tough stuff, I don't see why it won't work.
but I would wait for someone elses view on this. Hopefully Marc will see this, he works with HHB
on a regular basis. Good luck and post some pics for us eh.
Title: Re: Boo backing for Hornbeam?
Post by: Easternarcher on December 15, 2007, 08:08:40 pm
Thanks Dana, I'll be sure to do that.....
Sometime after the holidays tho.
Title: Re: Boo backing for Hornbeam?
Post by: wvfknapper on December 15, 2007, 09:29:52 pm
Why back it ? Just split the log and make 2 unbacked bows, hornbeam is a tough wood..............Be careful as the hornbeam in my area tends to twist as it grows and I have split 6 ft logs that twisted 90dg over the 6ft.

wvflintknapper
Title: Re: Boo backing for Hornbeam?
Post by: Rich Saffold on December 16, 2007, 03:44:47 am
EasternArcher,I'd make two selfbows which is what I did with my last piece of HHB..I flattened the back on mine, but I'm quite confident you could use the  wood under the bark as the back , and make the belly relatively flat..

You have two pieces so one should end up good enough for your friend..but don't put any pressure on yourself since it can diminish the fun of making the bows..

Rich
Title: Re: Boo backing for Hornbeam?
Post by: markinengland on December 16, 2007, 04:55:06 pm
I have seen a nice couple of self hornbeam bows here in the UK. The outer surface growth ring was left as the back, a few lumps and bumps but they were nce effective bows without a backing.
Mark in England
Title: Re: Boo backing for Hornbeam?
Post by: Marc St Louis on December 16, 2007, 06:26:25 pm
A 5" log of HHB will make more than 2 bows. Backed or unbacked it makes excellent bows. If you have Hickory then I would back it with that before using Bamboo
Title: Re: Boo backing for Hornbeam?
Post by: wvfknapper on December 16, 2007, 07:51:58 pm
Marc or anyone else

What sets the rule for using hickory vs boo ? What type of wood is more suitable for a boo backing?

wvflintknapper
Title: Re: Boo backing for Hornbeam?
Post by: Hillbilly on December 16, 2007, 07:56:16 pm
Quote
What sets the rule for using hickory vs boo ? What type of wood is more suitable for a boo backing

You usually want to use boo with a wood that is really strong in compression, such as osage or some of the tropical hardwoods, as boo has a tendency to overpower the belly wood. I have seen some nice boo-backed bows of many different species, though-keeping the bamboo really thin and/or trapping it seems to be the key to success with weaker belly woods. Easternarcher, why not make a selfbow?
Title: Re: Boo backing for Hornbeam?
Post by: Easternarcher on December 16, 2007, 09:09:05 pm
Quote
What sets the rule for using hickory vs boo ? What type of wood is more suitable for a boo backing

You usually want to use boo with a wood that is really strong in compression, such as osage or some of the tropical hardwoods, as boo has a tendency to overpower the belly wood. I have seen some nice boo-backed bows of many different species, though-keeping the bamboo really thin and/or trapping it seems to be the key to success with weaker belly woods. Easternarcher, why not make a selfbow?

I guess I'm afraid of messing it up! I'm also programmed to think that backing it will prevent any serious failures at draw....maybe I'm wrong.

I've never tried a selfbow, maybe I can try one, and if that don't workout then back the other de-crowned stave.
Title: Re: Boo backing for Hornbeam?
Post by: Gordon on December 16, 2007, 09:29:38 pm
If you are concerned that the bow might break on your friend, then back it with silk. Silk is easy to apply and should hold the back together.
Title: Re: Boo backing for Hornbeam?
Post by: Easternarcher on December 16, 2007, 09:36:32 pm
If you are concerned that the bow might break on your friend, then back it with silk. Silk is easy to apply and should hold the back together.

Over a sapwood back?
Title: Re: Boo backing for Hornbeam?
Post by: Gordon on December 16, 2007, 09:40:09 pm
Sure, you could put silk over a sapwood back.
Title: Re: Boo backing for Hornbeam?
Post by: Easternarcher on December 16, 2007, 09:49:57 pm
I hope you guys are ready to help me out with this, cuz I never done it before....
MArc, I just looked at your build-a-long for the HHB recurve, and it is sweet! I'd like do something like that with this HHB I have!

I'll need help getting the tips to curve like that I think.  Thanks guys.
Title: Re: Boo backing for Hornbeam?
Post by: Gordon on December 16, 2007, 10:05:29 pm
If you want to back with silk, I describe how to do that in my hazelnut build-a-long on page 7.
Title: Re: Boo backing for Hornbeam?
Post by: Pat B on December 17, 2007, 12:12:07 am
Start with a simple straight limbed bow. No need burdening yourself with recurves yet. There is time for that later after you get comfortable with building wood bows. A simple self bow is less apt to break when compared to a backed bow. When you add that human element to the equation the odds go against you. Your glue line should be exact, the glue still good, the curing time and temp right and then you have to tiller it correctly. With a self bow, the strength is inherent in the wood...usually. ;D
   Take your time!!! If you run into a problem or road block, take a few pics and post them here. I guarantee you will get an answer.     Pat

ps. Check out Jawge's site