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  #11  
Old 05-16-2011, 08:08 PM
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Default Re: Recipe from an 1893 book.

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i will be dry cutting with my converted wood chopsaw it even has one of them little dust bags on back .no water
For every particle that ends up in that little bag, a hundred will be floating around in the air. I know I sound like a broken record, but when dry cutting always protect your lungs. Not with one of those worthless paper masks, but a real respirator.
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  #12  
Old 06-17-2011, 06:31 PM
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Default Re: Recipe from an 1893 book.

yes i must get a good dust mask.. i did dry cut about 10 cuts very dusty.. and this was around 5 weeks ago . i have not been well since chest infections .sore throat .,also playing with blocks till 11 oclock at night in a sweatshirt might not be to good for me but when stuck in lose track
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  #13  
Old 06-17-2011, 10:32 PM
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Default Re: Recipe from an 1893 book.

You can make up a system with a small plastic tube, a tap and a tank that will trickle water onto the blade to reduce the dust. Seen it done it"s quite effective.
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  #14  
Old 06-17-2011, 11:08 PM
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Default Re: Recipe from an 1893 book.

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Originally Posted by jonlovepizza View Post
yes i must get a good dust mask.. i did dry cut about 10 cuts very dusty..
Even with wet cutting you should protect your lungs, the sharp silicon oxide that causes all the problems is still present in the water spray, I have a mate who now has silicosis from wet cutting bricks for a living.
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  #15  
Old 06-18-2011, 10:34 AM
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Default Re: Recipe from an 1893 book.

i got my weed spray working so will set it on side of saw wen cutting rest of my fire brick , i had the sprayer taped to my 9inch grinder because i was cutting a drive way with it.the other .it worked a treat, had to tape a plastic milk jug to back of grinder because of water getting into vent at back . thank you for your advice
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  #16  
Old 03-02-2014, 06:33 PM
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Default Re: Recipe from an 1893 book.

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Originally Posted by brickie in oz View Post
Recipe from an 1893 book.
We went to a book fair today and I picked up an old book on, Cements, Glues & Gums.

Fireproof cement No 2.
180 parts of iron filings.
45 parts lime.
8 parts common salt,
Vinegar.

Mix all into a paste with the vinegar and let dry thoroughly before heating.
This cement becomes stone hard on heating.
Hello everybody
Because I wanted an oven that heats up very quickly I was planning to construct a steel oven, but it turned to be rather expensive. One thought came to me. If I mix iron filings with Portland cement (I can't find fireproof cement) and lime is not it reasonable that the iron filings will make my homemade brew heat up quickly? (I'll make a mold for the oven and pour the mix in it)
If yes could any body give me the correct proportions?
Cheers
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  #17  
Old 03-02-2014, 06:39 PM
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Default Re: Recipe from an 1893 book.

It may be worth doing some trials, but remember that the iron filings will be subject to rusting even though they're in an alkaline environment heat will accelerate any reaction.. Stainless steel needles are the recommended reinforcing for this reason (and they're not cheap). I would suspect that the kind of proportion of iron filings you'd have to add, will weaken the mix to such an extent that it won't be strong enough. Unfortunately the recipe does not give the quantity of fireproof cement (presumably calcium aluminate cement)

Last edited by david s; 03-02-2014 at 06:45 PM.
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  #18  
Old 03-02-2014, 09:30 PM
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Default Re: Recipe from an 1893 book.

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Originally Posted by david s View Post
It may be worth doing some trials, but remember that the iron filings will be subject to rusting even though they're in an alkaline environment heat will accelerate any reaction.. Stainless steel needles are the recommended reinforcing for this reason (and they're not cheap). I would suspect that the kind of proportion of iron filings you'd have to add, will weaken the mix to such an extent that it won't be strong enough. Unfortunately the recipe does not give the quantity of fireproof cement (presumably calcium aluminate cement)
David, I think the "Fireproof Cement No 2" is the substance you make by mixing the iron, lime, salt and vinegar.
I'm still trying to figure out how it works.
I do believe, though, that it is meant for temperatures higher than we can achieve in a wood oven.
i.e. we may not be able to get it hot enough to "set" properly.
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  #19  
Old 03-02-2014, 10:12 PM
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Default Re: Recipe from an 1893 book.

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Originally Posted by wotavidone View Post
David, I think the "Fireproof Cement No 2" is the substance you make by mixing the iron, lime, salt and vinegar.
I'm still trying to figure out how it works.
I do believe, though, that it is meant for temperatures higher than we can achieve in a wood oven.
i.e. we may not be able to get it hot enough to "set" properly.
Ok, I see what you mean. It may be fun trying it out then
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  #20  
Old 03-04-2014, 08:26 PM
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Default Re: Recipe from an 1893 book.

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Originally Posted by wotavidone View Post
David, I think the "Fireproof Cement No 2" is the substance you make by mixing the iron, lime, salt and vinegar.
I'm still trying to figure out how it works.
I do believe, though, that it is meant for temperatures higher than we can achieve in a wood oven.
i.e. we may not be able to get it hot enough to "set" properly.
wotavidone, I am longing to see the results of your experiment
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