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Historical Inspiration This forum is dedicated to the discussion of historical knife design and its influence on modern custom knife work.

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Old 01-29-2004, 04:08 PM
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DiamondG Knives DiamondG Knives is offline
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Making Tamahagane

Hello Folks:
Ive found myself getting sucked into the mystery of the Japanese blade while here in Okinawa. I am going to try my hand at making some steel when I get home.
Ill describe the process I have in mind, if anyone has any hints or suggestions, please join in, I know just enough about this to be dangerous!


Building a large container for the furnace, thinking 3'long x 1.5' wide x 4' tall stacked concrete block filled with sand, then a healthy layer of clay on the inside with the bottom shaped like a V to funnel the melted liquid.

Have a side blast air vent @ 1' above gound level. (will a electric blower be too much air?)
'
Fill with wood and burn down, fill again, let burn down. Then layer charcoal (how thick?) then a layer of black sand(how thick?)
repeating this process until the furnace is full. do I need to put a top on this to help hold the heat?

Im thinking the result will be a spongelike mass of Tamahagne. Any idea how much ore will be had from a certin amount of sand? Also would adding scrap iron such as nails, and wire be benificial to build up the iron ?? Or would this just be a contaminate?

Thanks for reading, any ideas are welcome!!

God Bless

Mike


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Last edited by DiamondG Knives; 01-29-2004 at 04:10 PM.
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Old 01-29-2004, 06:51 PM
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Well that is a hell of a project. Two years ago when I used to get around the Bugei Sword Forum there was a lot of usefull stuff there on the subject. They reseted the forums though and I am not sure what happened to the earlier messages. I will try to dig something up during the week and keep feeding this thread.


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Old 01-29-2004, 10:00 PM
JossDelage JossDelage is offline
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You need a belows or some kind of forced air circulation. In Jpz tarawas, the steel doesn't get exactly to melting (at least, I don't think so).


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Old 01-30-2004, 03:24 AM
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Would an electric blower work?


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Old 02-04-2004, 04:08 PM
N. Creel N. Creel is offline
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Awesome project; I hope to do the same one day. Anyway, I don't know a lot about it; but on Mr. Fogg's site, Louis Mills has some pictures. I know he makes some great katana from what I hear. Here is the site.

Hope that helps some.
Nathan


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Old 02-04-2004, 08:34 PM
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Thanks Nathan, Thats a great site! I hope to share my trials on this as soon as I can get home.

God Bless

Mike


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