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| Make your own hide glue... http://www-.luthiersforum.com/forum/viewtopic.php?f=10102&t=4905 |
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| Author: | John Elshaw [ Fri Feb 03, 2006 3:38 pm ] |
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Here's an interesting article I found on the process of making hide glue. Don't go burying fido yet if he kicks the bucket. There's at least a good batch of hide glue in there... Quoting "Hide glue made from animal hides. Yes, from animal hides, almost any animal but primarily from cattle hides. This is simply because of the abundance of cattle hides due to the enormous world wide consumption of beef and subsequent tanning of hides for leather. The trimmed hide pieces (too small or irregular shapes to provide useable leather) are shipped to the hide glue plant. The glue manufacturing process is basically the following: wash to remove dirt soak in lime water for 60-90 days wash to remove hair and lime neutralize with acid, drain, wash & drain add water, heat to 110-120 deg. F for 2-4 hours (called an extraction) drain off the dilute glue solution, evaporate, chill, dry, grind repeat last 2 steps 3-4 times to extract all of the glue with the temperature being increased 20-25 deg. F each time. Hide glue is a protein derived from the simple hydrolysis of collagen which is a principal protein constituent of animal hides. Collagen, hide glue and gelatin are very closely related as to protein and chemical composition. An approximate chemical composition for glue is: Carbon 51-52% Hydrogen 6-7% Oxygen 24-25% Nitrogen 18-19% Total 100 % The molecular weight of hide glue has a wide range from 20,000 - 250,000. The higher the gel strength, the higher the molecular weight. |
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| Author: | CarltonM [ Fri Feb 03, 2006 5:03 pm ] |
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[QUOTE=John Elshaw] An approximate chemical composition for glue is: Carbon 51-52% Hydrogen 6-7% Oxygen 24-25% Nitrogen 18-19% Total 100 % [/QUOTE] You forgot cooties! |
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| Author: | j.Brown [ Fri Feb 03, 2006 5:27 pm ] |
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Wooo, man, that sounds like a discovery channel "Dirty Jobs" segment. I'll stick to driving to Woodcraft and dropping a ten spot on a pound of granules for now. -j. |
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| Author: | Evan Gluck [ Sat Feb 04, 2006 1:50 am ] |
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So let me get this striaght when my dog dies whatever part I don't turn into leather I should turn into glue? In NYC we have rats, I am thinking 1 rat per bridge reglue. According to the latest statistics that would be 17 million bridge reglues! Or of course 1 J-200 bridge 
Luthery is creepy! Evan |
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| Author: | LarryH [ Sat Feb 04, 2006 2:36 am ] |
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My neighbor stopped in the other day and was surprised to see I was building guitars. She told me a story of her father who built violins in the mid west a million years ago and of course he had a secret hide glue recipe that he kept brewing in the shop. Turns out he had a few chunks of hide smokin away, always ready for the next glue joint. She had no idea how it was done but I'll be happy to try it with a credit card and a shipping address when the time comes. |
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| Author: | Pwoolson [ Sat Feb 04, 2006 9:26 am ] |
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If Ed Geim (sp) had only known about this glue production... |
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| Author: | j.Brown [ Sat Feb 04, 2006 6:14 pm ] |
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Ed Gein |
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| Author: | Mark Tripp [ Mon Feb 06, 2006 3:27 am ] |
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Hmmm... Lotsa cows in Montana... 
-Mark |
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| Author: | John Mayes [ Sat Feb 18, 2006 10:47 am ] |
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hmmm lots a deer in Oklahoma... |
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| Author: | Serge Poirier [ Sat Feb 18, 2006 6:02 pm ] |
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Scary for me in Canada... Da Bear
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| Author: | Red Ennis [ Sun Feb 19, 2006 2:29 am ] |
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Lots of road kill (possums) in South Carolina..... |
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