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Offline carla

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horse bones
« on: 19/04/2005 17:35:17 »
We were discussing the phrase "sent off to the glue factory". When, and how were horse bones used to make glue? Any clue? We have been everywhere to find the answer!

carla
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Offline daveshorts

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Re: horse bones
« Reply #1 on: 19/04/2005 18:20:23 »
Wasn't it a gelatin based glue they used? You make gelatin by boiling down collagen (a protein) in the connective tissue of an animal skin, ligaments, bones (bones consit of Calcium phosphate and a load of stringy proteins, which is why they are a lot harder to crack than limestone - if you boil them in acid to dissolve out the Calcium phosphate they go all floppy)  etc.

I think this was one of the few uses animals that were not fit for eating were useful for

Ther is a description of how to make gelatin here if you wanted to know.
http://www.gelatin-gmia.com/html/rawmaterials.html
 

Offline ADD HAHAHA

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Re: horse bones
« Reply #2 on: 20/04/2005 02:55:26 »
thats happy :(
 

Offline l_kryptonite

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Re: horse bones
« Reply #3 on: 11/05/2005 06:25:02 »
The process is still used in heavy duty glues for furniture and such.  However the carcass is usually used for pet mince and fertiliser thesedays, though.

I would not worry your pretty head, ADD HAHA, the horse does not feel a thing.;)
 

Offline chris

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Re: horse bones
« Reply #4 on: 11/05/2005 08:33:17 »
Why should the gelatin be so sticky ? The last time I made a jelly I didn't need a chisel to get it out of the bowl, so how is it turned into glue ?

Chris

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Offline daveshorts

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Re: horse bones
« Reply #5 on: 11/05/2005 08:58:22 »
If you let gelatin actually dry out it is very stickyI asume that when it is wet all the sticky parts of the molecules are covered with water and there isn't much polymer compared to water anyway.
 

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Re: horse bones
« Reply #5 on: 11/05/2005 08:58:22 »

 

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