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Author Topic: Artificial Stone...what's it made from ?  (Read 5566 times)

Offline neilep

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Artificial Stone...what's it made from ?
« on: 15/05/2006 13:37:23 »
Dearest Science Peeps,

I just saw a program explaining how they make Mustard !!..(please don't be too jealous of my exciting lifestyle :))

...anyway, during the process the chappy said they grind the seeds using artificial stones !..so, I figured I know a website where I may be able to get an answer but the Mickey Mouse Club and Watching Paint Dry websites failed to respond so I thought I'd ask here :)

..any ideas what artificail stone is made from ?

Thanking you

Neil

Men are the same as women, just inside out !


 

ROBERT

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Re: Artificial Stone...what's it made from ?
« Reply #1 on: 15/05/2006 14:05:01 »
"artificial stone" is a ceramic.

" This material is not the type of artificial stone like a concrete which sets by chemical action, it is a ceramic which has to be subjected to a considerable amount of heat for some days in a kiln, Ceramics of this type have been known for many centuries way back into antiquity as is shown by the Terra Cotta Army sensation in China from the Qin Dynasty (221 to 206 B.C.): a group of over six thousand soldier figures their horses and other equipment, a Chinese Emperorís bodyguard for the after life, each one individually made. "

http://homepage.ntlworld.com/peter.fairweather/docs/Coade_Stone.htm


Here is the recipe for Coade stone:-

" The 'recipe' for Coade stone is, however, still in existence, contrary to popular belief and it can still be produced. It was not a chemically-produced artificial stone, like concrete. It was kiln-fired ceramic. The manufacture required special skills; it was the careful control and skill in kiln firing, over days, that ensured success. This skill is even more remarkable, when the potential variability of kiln temperatures in those times is considered. Mrs Coade's factory was the only really successful manufacturer.

The formula used was:

10% of grog (see below)
5-10% of crushed flint
5-10% fine sand (to reduce shrinkage)
10% crushed soda lime glass.
60-70% Ball Clay from Dorset & Devon.
The 'grog' which was used was made up of finely crushed pre-fired items such as 'wasters' (material that had already been fired once). This was also referred to as "fortified clay" which was then inserted (after kneading) into a kiln which would bake the clay at a temperature of 2012 degrees Fahrenheit for somewhere over four days. "
http://en.wikipedia.org/wiki/Coade_stone



« Last Edit: 15/05/2006 14:08:21 by ROBERT »
 

Offline neilep

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Re: Artificial Stone...what's it made from ?
« Reply #2 on: 17/05/2006 19:27:29 »
Thanks Robert.

Your posts are invaluable here and appreciated.

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ROBERT

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Re: Artificial Stone...what's it made from ?
« Reply #3 on: 18/05/2006 13:37:11 »
quote:
Originally posted by neilep

Thanks Robert.

Your posts are invaluable here and appreciated.

Men are the same as women, just inside out !



I saw a history documentary recently, (probably as exiting as your mustard programme :)),
 where "artificial stone" was mentioned, so I was interested to find out what it was.
 

Offline neilep

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Re: Artificial Stone...what's it made from ?
« Reply #4 on: 19/05/2006 13:19:34 »
All we need now Robert is a documentary on the History Of Mustard Manufacture With Artificial Stone and we'll both be satiated completely !!

Men are the same as women, just inside out !
« Last Edit: 14/07/2006 21:34:47 by neilep »
 

Offline time-cop

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Re: Artificial Stone...what's it made from ?
« Reply #5 on: 20/05/2006 19:58:17 »
there`s a shed load on artificial stone,as for mustard,you dont want to know unless you got a week spare [xx(]

http://www.armybarmy.org
 

Offline ken 91td7785

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Re: Artificial Stone...what's it made from ?
« Reply #6 on: 14/07/2006 20:24:23 »
hi neilep did you ever find out how to make artifical stone if you did could you tell me as i havent a clue where to look thanks ken
 

Offline neilep

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Re: Artificial Stone...what's it made from ?
« Reply #7 on: 14/07/2006 21:38:35 »
Hi Ken,

I think the nearest we got was the answer given by Robert...alas no other information was gathered.

Sorry

Hey !!..if you ever find out please come back and post it here.

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Offline JimBob

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Re: Artificial Stone...what's it made from ?
« Reply #8 on: 19/07/2006 14:09:16 »
Ken,

Do a search on "lapidary supplies" I have seen "stones" that look to goog to be natural and am certain that fake ones are made.



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Re: Artificial Stone...what's it made from ?
« Reply #8 on: 19/07/2006 14:09:16 »

 

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