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I Forge Iron

How much fireclay do I need for my forge?


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I'm building a gad forge out of an old air tank. To get the size chamber I want (6 inch diameter x11) I have about 3' of insulation. I'm planning on castible refractory, one of the vermaculite / fireclay blends and eventually adding some itc 1000.

It'll need about 1800 cubic inches overall.

If I go with a 4:1 vermaculite fireclay blend how much will I need? Im just not familiar enough with the material to know.

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A: Content big cylinder: 6inch²*Pi*11 = 1243.44inch³

B: Content small cylinder: 3inch²*Pi*11 = 310.86inch³

C: Content insulation:A-B = 932.58inch³

 

So you would need:

932.58/5 = 186.516inch³ fireclay

932.58/5*4=746.064inch³ vermaculite

 

Of course there's also the addition of water, but this will evaporate.

 

Why not use kaowool? It's more resistent against shock, temperature,...

 

What's the forge for? Forging or smelting,or,...

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