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Knife From A Rail Road Spike

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A customer handed me a rail road spike and says he wants a knife made forged out of it.

1. What do I quench it in ?

2. How do I heat treat it?

Tomorrow I'll give it a spark test and have told him I had doubts about the quality of the blade but I guess the heart wants what the heart wants.

Years ago I had used Rasps and files for my blades never a rail road spike.

Any suggestions ?

 
Posted : 02/04/2014 10:22 pm
Matthew Parkinson
Posts: 549
Honorable Member Journeyman Bladesmith (5yr)
 

slit it and weld in 1095 or just call it a letter opener.. the Best that a spike can be is around 35-40 points of carbon so not really enough to get hard enough for a knife.

 
Posted : 03/04/2014 5:32 am
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I know it's what he wants. To me just a box opener and not even a good one but I'll give him the best one I can I guess.

 
Posted : 03/04/2014 6:44 am
Bob Hartman
Posts: 21
Member
 

|quoted:

A customer handed me a rail road spike and says he wants a knife made forged out of it.

1. What do I quench it in ?

2. How do I heat treat it?

Tomorrow I'll give it a spark test and have told him I had doubts about the quality of the blade but I guess the heart wants what the heart wants.

Years ago I had used Rasps and files for my blades never a rail road spike.

Any suggestions ?

Hi Dave,

I'm going to warm this subject up again.

Start by doing a search on "Super Quench". It will harden low carbon steel better than anything else. A water quench alone will do nothing to mild steel.

Of course it will never be a "knife", but it will surprise you. I did a spike after I read about super quench. I got 50 cuts of sisal rope.

I hope I don't get in trouble, but here is a link to another forum where I posted my results.

http://knifedogs.com/showthread.php?11112-My-Experiment-With-Super-Quench

 
Posted : 27/04/2014 12:14 pm
Posts: 0
New Member Guest
 

|quoted:

Hi Dave,

I'm going to warm this subject up again.

Start by doing a search on "Super Quench". It will harden low carbon steel better than anything else. A water quench alone will do nothing to mild steel.

Of course it will never be a "knife", but it will surprise you. I did a spike after I read about super quench. I got 50 cuts of sisal rope.

I hope I don't get in trouble, but here is a link to another forum where I posted my results.

http://knifedogs.com/showthread.php?11112-My-Experiment-With-Super-Quench

 
Posted : 29/04/2014 5:16 am
Posts: 0
New Member Guest
 

Thanks Bob it did seem to go by the wayside and I will take that into consideration and check it out. I did forge the spike and heat and quench it and of course in my opinion had very poor results. It barely hardened I do have a source for some spike higher in carbon so I'll get some of those and try again because the idea came out kind of nifty even though I messed the angle up. My son uses the machine and readjusted the Jig and I never checked the angle before I used it. I posted it don't be to critical first in 25 years and done the way I liked it.

Attached files

 
Posted : 29/04/2014 5:26 am
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