Primative Forged Knives

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Primative Forged Knives

Postby MaxEntropy » Tue Aug 30, 2016 5:01 pm

I have forged a few primitive knives and I would like to post a couple of photos. I can't figure out how to do that, however. Is there a tutorial on this board somewhere?
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Re: Primative Forged Knives

Postby saustin1967 » Tue Aug 30, 2016 5:09 pm

Are you posting from a computer or a tablet/phone?

From a tablet/ phone via tapatalk. Just past your picture in the post. Has to be a reply not a quick reply. Hit the three dots in the top right to reply.

From a computer, you would choose the upload attachment tab at the bottom of the reply screen


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Re: Primative Forged Knives

Postby MaxEntropy » Tue Aug 30, 2016 5:15 pm

Well, that was painless! This is a "Viking" style knife forged from a single turn of a large RR truck spring. The spring is 5160 and the coil was 1/2" x 3.5" It took several hours to forge out the rat tail but it came out ok. It has been quenched and tempered and holds a good edge. I also made the sheath for it.
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Re: Primative Forged Knives

Postby saustin1967 » Tue Aug 30, 2016 5:16 pm

Very nice, I've alway called that style a blacksmiths knife.


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Re: Primative Forged Knives

Postby MaxEntropy » Tue Aug 30, 2016 5:19 pm

I have heard them called that too. I have also heard them called Women's Knives.
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Re: Primative Forged Knives

Postby RMAR » Tue Aug 30, 2016 6:01 pm

Awesome! I can appreciate what it took to draw out that rat tail. One day I will attempt one of these.
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Re: Primative Forged Knives

Postby saustin1967 » Wed Aug 31, 2016 6:22 am

RMAR wrote:Awesome! I can appreciate what it took to draw out that rat tail. One day I will attempt one of these.


More heat! Should move like stiff play dough.
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Re: Primative Forged Knives

Postby MaxEntropy » Wed Aug 31, 2016 7:09 am

If you are making a turning fork out of mild steel, it will move more easily at high heat and using high heat has no affect on the performance of the fork. However, this is 5160, a .60% carbon steel with about .85% Mn and .80% Cr. These three elements tend to reduce dislocation mobility and make the steel resist deformation. Additionally, higher heat causes grain growth and large grains are brittle; not what you want in a knife blade. Lastly, higher heat will decarburize the surface and since this was to be a primitive blade with no subsequent grinding, I did not want to leave a thick decarb layer in place. Below is a pic of the spring turn I started with. The next ones are of the blade in mid process. I use a 2 burner Diamondback gas forge at home with a 170# Old World anvil. The hammer is a 2# custom made diagonal peen. When I work at Washington on the Brazos State Historical Site, I bring my coal forge and my 100# TFS anvil.
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Re: Primative Forged Knives

Postby saustin1967 » Wed Aug 31, 2016 8:23 am

Nice! I have a few of those springs laying around the shop.

Tip: When you post you pics, post them in reverse. For some reason the upload reverses the lay out.
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Re: Primative Forged Knives

Postby saustin1967 » Wed Aug 31, 2016 9:16 am

From curl to straight, from round to straight. Yep that is a pain in the behind.
Last time I did that, had to use a really big hammer.
Have not tried it with my new forge.
2018 - 8 Nights Under the Stars

Slow is smooth, Smooth is fast
non timebo mala, quoniam tu mecum es

à tout le monde, à tous mes amis, je vous aime"

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