Wyrm-Dah (updated with new pictures)

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Jan 10, 2010
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Here is the ..middle.. of the first in a series of art knife/sword projects I will be doing. I was recently struck by the cool patterns you see in the worm/insect eaten wood you find under the bark of dead trees. So I've been on a mission collecting interesting pieces and stabilizing them and preparing them for this series. This one will be inspired by a Burmese Dah and Mr. Don Fogg. This 20" blade is forged from my own steely iron smelted from ore in a small bloomery furnace. The bloom was broken into chunks and sorted according to carbon content. Some pieces were run through a re-melting 'refinery' hearth to add carbon and general clean-up. Other bits were re-melted with some Campo de Cielo meteorite. Other bits were left as is. All of this was stacked and worked into a billet and then forge welded to a bar of Aldo 1075. I intend to give the blade a geometry (not shape as much as distal taper and cross-section) and balance and therefore cutting characteristics of a katana. Here are a few pictures of the progress...

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I couldn't resist a quick peak at the pattern during grinding..still lots to do before heat treat.

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So I heat treated the blade today. Twice. The first time I didn't get enough hardness in the spine. I found this out by taking a whack at a piece of oak firewood. It bent trying to get it out. So I heat treated again with a longer soak and then took some more whacks at some firewood. Fun way to test! With a full 1/4" spine 3/4 of the blade and a nice convex to almost zero.. it sure does have some cutting power! And it is nice and hard now....

I took some video after the second quench. The blade only has a 60 grit machine finish at this point and no handle yet.

[video=youtube;hd24Q4v8VcE]http://www.youtube.com/watch?v=hd24Q4v8VcE[/video]
 
Scott, very cool sword and vid too!

You are a trendy dresser too!

Steve
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Member, W.F. Moran Jr. Museum & Foundation
 
Thanks Steve! I'm glad you like my clothing choice. I work hard on that and save my best stuff for the shop. I admit I pamper myself quite a bit and my wife wasn't happy at all that I wore my Walgreens (3 for $10!!) shirt while forging.
 
This had to be set aside but I finally got back to it! It is now more accurately called a 'daab' since it has as a tsuba. Thai daabs often are fitted out with Japanese fittings. The grip.... is purely from my imagination.

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Thanks guys.... This is really one you need to see in person. Too much missing in the photographs.
 
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