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Author Topic: Built my BBI form..didn't work  (Read 7317 times)

Offline LittleBen

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Re: Built my BBI form..didn't work
« Reply #60 on: May 13, 2013, 08:29:00 AM »
Do not use regular 2 part epoxy, or superglue for laminating the boo on.

Smooth=on, unibond 800/urac 185 or Titebond3. Your choice for laminating the bow.

For the tips superglue gel or smooth on in my opinion. I don't know how unibord will adhere to horn. You could test it though. Typicaly cyanoacrylate (supoerglue) bonds extremely well with biomaterials like horn ,... or your skin ...

As for the bend in the ipe. I do not think you will get it to make that bend without some kind of bending beforehand with either dry heat or steaming. I've tried to reflex ipe cores before and have snapped them. I don't thhink you will even get close to making that bend with a plain ipe slat 3/8" thick.
I would either try to pre-bend it with heat, or rip the ipe into two slats of 1/8" (I'm assuming you will lose 1/8" from saw kerf), and add a core lam of something else like maple or walnut (1/8" thick) between the boo and ipe to bring you back to 3/8" total thickness. The thin pieces should make the bend fairly easily I think.
If you do that though you might need to taper one or more of the center laminations so that you dont end up tillering through the ipe on the belly.
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Online Roy from Pa

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Re: Built my BBI form..didn't work
« Reply #61 on: May 13, 2013, 08:34:00 AM »
The epoxy will work for the over lays. Lots of guys us super glue but I don't.
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Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #62 on: May 13, 2013, 08:35:00 AM »
well jeez Ben..that rains on my parade..lol
I do appreciate the heads up.
hhmmmm...Not sure what to do right now.

Flipping the tips sounds the best right now..
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #63 on: May 13, 2013, 08:38:00 AM »
Quote
Originally posted by LittleBen:
......
If you do that though you might need to taper one or more of the center laminations so that you dont end up tillering through the ipe on the belly.
That was my worry while reading your post Ben.
That sounds beyond my realm of knowledge at this point.
Maybe after I get at least one under my belt..lol
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline alteredbeast

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Re: Built my BBI form..didn't work
« Reply #64 on: May 13, 2013, 08:44:00 AM »
I thought when doing a laminated you tillered by taking or shaving wood off the sides...
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Offline alteredbeast

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Re: Built my BBI form..didn't work
« Reply #65 on: May 13, 2013, 08:47:00 AM »
of coarse i don't have any experience with this as of yet i'm on my first bow
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Offline LittleBen

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Re: Built my BBI form..didn't work
« Reply #66 on: May 13, 2013, 08:58:00 AM »
With glass bows I think this is true, but my experience with wood laminates is that it's hard to get the stack thickness perfect (hard to predict) so you end up tillering both, sides and belly.


Zradix, maybe the thing to do is just put some simple reflex into it. You can probably get 2-3" of reflex bu just eliminating the mid limb posts and clamping the handle to the center post and the tips to the outer posts, that will drastically decrease the bend, but you will still get a nice performing bow ... then again I'm just partial to reflexed longbows.
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Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #67 on: May 13, 2013, 09:20:00 AM »
I think I'm just going to wait until I get the ipe in the mail.
Take it down to thickness.
And just see how it feels.

I'll practice some heat bending on the scrap.
At that point I'll decide if I want/need to lower the tip posts.

Thank you for the help Guys.
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #68 on: May 13, 2013, 09:24:00 AM »
Quote
Originally posted by Roy from Pa:
The epoxy will work for the over lays. Lots of guys us super glue but I don't.
Cool!

I bought the unibond for the glue up as I had read the smooth on needs a heat box...I guess that wasn't true.

I have some slow cure epoxy that might just be the ticket for the tips..also have some good gel type super glue for feathers that seems like darn good stuff. I'll probably try a little test with each and see which one needs a bigger hammer to get it to come apart..lol
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #69 on: May 13, 2013, 10:41:00 AM »
damnit boys..lol
You got me all work up with worries now about if I'm gonna crack the ipe.....
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline Echatham

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Re: Built my BBI form..didn't work
« Reply #70 on: May 13, 2013, 11:17:00 AM »
Zradix. chill man!  take a look at my build again. I had no problem putting that bend in mine.  I know you are trying to push the envelope and get as much R/D as you can... and as much speed as you can.... and as short as you can.... but the bow i made, is moderate in R/D, no flipped tips, nothing crazy... but it shoots FAST.  and its a dream to shoot. you don't have to get to crazy.  you won't have any problem following Roy's advice. I sure didn't.
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Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #71 on: May 13, 2013, 12:12:00 PM »
I have been Eric..
I've been overlaying your pics over mine on photoshop..the whole bit..lol
YOU NAILED  my wants though..lol
For this one, I'm just gonna play it sorta safe though.

Right now I have my blocks set with the same difference in height as Roy..well my middle block is just a tad higher.

I've moved the tip blocks out..well to the tips.
So that got rid of a bit of the sharp curve.

I also moved my mid blocks in just a bit too.

It looks ...well..not as scary now..lol

Did get in the horn today..so that's a good thing.

Here's how it looks now..

   

Here's how it was...
 
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline Echatham

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Re: Built my BBI form..didn't work
« Reply #72 on: May 13, 2013, 01:10:00 PM »
i think it looks perfect now.   :thumbsup:
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Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #73 on: May 13, 2013, 01:19:00 PM »
Thanks for the reassurement Eric.

She looks more like a graceful glider than a fighter jet.
..though..Corsairs could certainly hold their own.

Graceful lines are GOOD.
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline Echatham

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Re: Built my BBI form..didn't work
« Reply #74 on: May 13, 2013, 02:28:00 PM »
graceful gliders are good.
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Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #75 on: May 13, 2013, 03:48:00 PM »
just received some wood in the mail.
Guess I'll be making some sawdust tonight.
   :thumbsup:
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Offline Zradix

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Re: Built my BBI form..didn't work
« Reply #76 on: May 13, 2013, 03:50:00 PM »
dbl post
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If some animals are good at hunting and others are suitable for hunting, then the Gods must clearly smile on hunting.~Aristotle

..there's more fun in hunting with the handicap of the bow than there is in hunting with the sureness of the gun.~ F.Bear

Online Roy from Pa

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Re: Built my BBI form..didn't work
« Reply #77 on: May 13, 2013, 04:03:00 PM »
IPE cracks all the time.
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Online Roy from Pa

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Re: Built my BBI form..didn't work
« Reply #78 on: May 13, 2013, 04:04:00 PM »
And I mean all the time.
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Online Roy from Pa

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Re: Built my BBI form..didn't work
« Reply #79 on: May 13, 2013, 04:05:00 PM »
ROFLMAO..........

Just messen wif ya John..   :laughing:
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