Author Topic: Hide glue, bone glue or fish glue...  (Read 8760 times)

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Offline akila

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Hide glue, bone glue or fish glue...
« on: April 08, 2008, 08:25:02 am »
Hi guys.....i want to ask you abute this 3 type of glue wisch is the best for making asiatic bows, and why???? evreybody say that fish glue is the best...some people say that hide glue is the best....i have done some research on the internet and i found that actualy bone glues is the strongest  glue.....and i realy dont know whatt to beleve.....i hope  you can help me with this.....thks...im thinking that all 3 types are good becose its realy the same thing...its all abute colagen here right...?

Offline Canoe

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Re: Hide glue, bone glue or fish glue...
« Reply #1 on: April 08, 2008, 01:50:47 pm »
Howdy Mr. Akila,

Yes, it's all about the colagen.

In the book 'The Traditional Bowyer's Bible - Vol. 1,' there is a chapter titled, GLUE. (by Tim baker).

In that chapter, Mr Baker lists results from straight tests of a wide range of "glues."  From that list, on page 208;
Sinew Glue...36 lb.s
Bone Glue, sold as Hide Glue...36 lb.s
Hide Glue.....38 lb.s
Fish Bladder Glue...40 lb.s
Knox Gelatin (Jello)...42 lb.s

Mr. Baker goes on to explain that, "Above about 35 lb.s the (hard wood) samples themselves begin to fail."  I interpreted this statement as him suggesting that at about 35 lb.s the glue becomes as strong as or stronger than the wood that it is glued to.

I hope this was helpful informantion, and I look forward to seeing your glued-up composit bow.

best of Luck,
Canoe
   

"Nature is a mutable cloud which is always and never the same."  - R. W. Emerson

"Wilderness is not a luxury, but a necessity of the human spirit."    -Edward Abbey

Offline leapingbare

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Re: Hide glue, bone glue or fish glue...
« Reply #2 on: April 08, 2008, 01:54:47 pm »
donno if this helps but i'v seen hide glue chip glass  :o
Mililani Hawaii

Offline Justin Snyder

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Re: Hide glue, bone glue or fish glue...
« Reply #3 on: April 08, 2008, 07:03:53 pm »
If you are buying hide glue you need to ask what strength it is.  There is much variation depending on its intended use and preperation.  Yes preperation means a lot to the strength and open time of hide glue. All of the animal glues are stronger than the wood. Fish glue is more flexable, but is also more sensitive to moisture.  Just use what you have.  Justin
Everything happens for a reason, sometimes the reason is you made a bad decision.


SW Utah

Offline akila

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Re: Hide glue, bone glue or fish glue...
« Reply #4 on: April 09, 2008, 02:56:14 am »
Hi...thks a lot....for your help....i wanna ask you something els....i wass looking for this Knox gelatin..and it seams that here in Romania wi dont have this brand...instead wi have Dr.Oetker...do you know iff its the same thing?....it dosent wright on the package from whatt it is made......

Offline Canoe

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Re: Hide glue, bone glue or fish glue...
« Reply #5 on: April 09, 2008, 10:05:47 pm »
Howdy Akila,

I looked up Dr. Oetker Gelatin on the internet (Goggle), it appears that it is the same as Knox gelatin from the U.S.

I also found a recipe for glue...
http://www.frets.com/FRETSPages/Luthier/TipsTricks/KitchenGlue/kitchenglue.html

You need three parts water to one part gelatin (3:1).  Also, while cooking the mix, you must not allow the temperature to go above 180F.
And it is good to work quickly - get the mixture to above 150F, and apply the glue right away.  Don't let it sit for any length of time.

In gluing, there are other factors to think about;
Make sure you have a rough, clean surfice to apply the glue.  You can use a solvent to remove any natural wood oils that might be on the glue surface.
Surface Area is also important.  In designing you bow, the larger the glue surface area is the more the stresses are spread out over the glue area.

I hope this was helpful, and I look forward to seeing your bow.

All the best,
Canoe
"Nature is a mutable cloud which is always and never the same."  - R. W. Emerson

"Wilderness is not a luxury, but a necessity of the human spirit."    -Edward Abbey