Author Topic: Good intentions.  (Read 5754 times)

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Offline Aries

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Good intentions.
« on: August 22, 2015, 10:39:41 am »
I recently made my father in law an osage self bow for father day and he fell in love with it and has really got the shooting bug at this time. His self bow came in a little under weight so I thought I'd treat him to something a little more high performance.

I included him in the bow making process this time so he would have some more skin in the game and he is loving it.

Here is where things went wrong.  I had some ipe that has been in in my shop for the past 3 years just waiting for a good piece of boo. I had him get us some boo, we built the form together, and this is where I messed up.

I used the inner tube wrapping method for the first time, my 1/4 inch thick hickory power lam slipped south about 1.25 inches from center. No biggie right just make the bow shorter on one side to adjust, but Mr. excited Bowyer here(me) went ahead and got Gung ho right after unwrapping the bow and cut out an arrow shelf :embarassed:

I lay my quandary at thyn master bowyers feet and ask for your recommendations.
Thank you,
Ty
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline Aries

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Re: Good intentions.
« Reply #1 on: August 22, 2015, 10:41:23 am »
Bow total current length 64 inches, final goal draw 28" @ 55-60#
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline Aries

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Re: Good intentions.
« Reply #2 on: August 22, 2015, 10:44:51 am »
Bamboo is on with tb3, the handle is laminated with gorilla epoxy.
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline bubby

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Re: Good intentions.
« Reply #3 on: August 22, 2015, 10:46:01 am »
It looks like you cut the pass past center?
failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline Aries

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Re: Good intentions.
« Reply #4 on: August 22, 2015, 10:47:40 am »
It's even to center.
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline HighEagle

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Re: Good intentions.
« Reply #5 on: August 22, 2015, 10:51:04 am »
I dont understand whats the problem? looks like a good start. Myself if I cut in a window I do wait a little longer till its shooting, Good luck, Chuck
Armstrong, BC

Offline Aries

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Re: Good intentions.
« Reply #6 on: August 22, 2015, 10:55:10 am »
My power lamination is 1.25 inches off center. It slipped towards the bottom limb of the bow. That is my issue I'm thinking  gonna have a massively unbalanced tiller when I get this thing bending , I'll have to compensate by taking a lot of the ipe off of the bottom limb right at the handle fade, I'm not sure if taking that much of the belly ipe wood off at the handle to compensate for the uneven power lamination is going to work out
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline osage outlaw

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Re: Good intentions.
« Reply #7 on: August 22, 2015, 11:30:36 am »
Disclaimer:  I don't know squat about lam bows. 

Why don't you go ahead and tiller it out?  It's already glued up.  If you can't take it apart and reuse the lams you might as well see what you can do with it. 
I started out with nothin' and I still got most of it left

Offline sleek

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Re: Good intentions.
« Reply #8 on: August 22, 2015, 11:50:02 am »
It slipped torwards the bottom limb. Thats the direction you want it to go if it was gonna go anywhere. Makes the bottom limb stiffer. Leave it be and tiller. Just dont work the fades too hard.
Tread softly and carry a bent stick.

Dont seek your happiness through the approval of others

Offline Aries

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Re: Good intentions.
« Reply #9 on: August 22, 2015, 11:51:27 am »
Ok guys I appreciate the feed back,  I was really hoping to not need to take this thing apart.  I'll post some pics as it progresses
"If the only tool you have is a hammer,
                   you tend to see every problem as a nail."
                               ~Abraham Maslow

Offline Badger

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Re: Good intentions.
« Reply #10 on: August 22, 2015, 11:59:02 am »
  I started doing mine in two stages for the same reason you ran into, I glue on my pwer lam and the next day come back and do the rest of the lamination. Not really neccessary but I have had better luck doing it that way. I think your lam slipped a bit too far and may allow the handle to flex where the arrow shelf is cut out, maybe not but could be a problem.

Offline sleek

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Re: Good intentions.
« Reply #11 on: August 22, 2015, 12:01:42 pm »
If he leaves it full length, and leaves his fades alone, he should be ok.... depending on draw weight and length.
Tread softly and carry a bent stick.

Dont seek your happiness through the approval of others

Offline HighEagle

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Re: Good intentions.
« Reply #12 on: August 22, 2015, 02:24:40 pm »
couldnt you sand it off and glue on a new one?
Armstrong, BC

Offline sleek

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Re: Good intentions.
« Reply #13 on: August 22, 2015, 02:32:46 pm »
Seriously,  just dont start any tillering until just past your powel lam.
Tread softly and carry a bent stick.

Dont seek your happiness through the approval of others

Offline Pat B

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Re: Good intentions.
« Reply #14 on: August 22, 2015, 03:48:35 pm »
How wide is your glue up? If narrow enough you shouldn't have any problems with tillering even if the bottom limb is slightly stiffer. That's how you want it anyway.
 Two tips...before doing a glue up drill 2, 1/8" holes through the power lam at the handle and into the boo slightly(not all the way through) and into the belly(not all the way through) so the holes line up with the components at their proper location. Add bamboo skewers or 1/8" dowels and use them as alignment pins so your components won't slip during the glue up. This is a trick Pearlie gave me and it works great.
 The second is never cut into or shape the handle area until the tillering is done. You don't need a shaped handle or tips to tiller a bow.
Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC