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| The Folding Knife (& Switchblade) Forum The materials, techniques and the designing of folding knives. |
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#1
03-19-2004, 02:08 PM
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Stop Pins
I was planing on buying 416 SS 3/16" round stock to make my own stop pins for a big folder I'm making. I'm going to heat them with a torch, and quench in water to harden them. Would this be an OK thing to do?
Jeremy 
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#2
03-19-2004, 03:04 PM
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I guess it would be OK but it probably won't result in the proper hardening of the steel. 416 is a stainless steel, as you already know, and as such it requires a lengthy soak time at a specific temperature to achieve the maximum results. I use 416 pins myself and I heat treat them with the same formula I use for 440C.
You could experiment and see what kind of results you get, but you might want to consider using commonly available drill rod instead. It's not stainless but it can be heat treated with a torch with excellent results ..... __________________ Your question may already have been answered - try the Search button first!   
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#3
03-20-2004, 08:03 AM
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Thanks Ray, thats the kind of anser I was looking for. This heat treat thing is still new to me.
I read that guys use oil to quench. What kind of oil can you use? Thanks Jeremy
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#4
03-20-2004, 09:43 AM
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All kinds of oil can be used. Some guys like used motor oil, some use ATF , I used to use hydraulic fluid, some like olive oil, etc. All these fluids quench at different rates and you may find that some will work great for the steel you choose and some will not.
Not all steels quench in oil. Some stainless blade steels quench in air, some in oil. Most carbon steels quench in oil but some quench in water. If you follow the drill rod suggestion then you will probably be using W-1 steel which is water quenching.... __________________ Your question may already have been answered - try the Search button first!
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#5
03-20-2004, 09:57 AM
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Thanks again Ray. I'll try the Drill Rod for now.
Jeremy
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#6
03-22-2004, 07:19 AM
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stop pin
Why not just buy hardened pin stock from MSC. Cut to length with a Dremel cut of disc. Your good to go.
Michael
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#7
03-22-2004, 08:43 AM
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That works and it's pretty economical too. But, be careful which pins you get. A quick glance at the catalog this morning shows some of the pins described as 'surface hardened' to Rc 64. That sounds like they may be case hardened and soft in the middle. That would be OK for some knives but maybe not good enough for one that gets abused a little ....
__________________ Your question may already have been answered - try the Search button first!
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#8
03-22-2004, 11:55 AM
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I was looking through the MSC Catalog, and can't find the hardned pin stock. I think I can get some 3/16 ss pins from Pops, but I can't find them on there web page. I guess I'll have to call.
Jeremy
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#9
03-22-2004, 05:53 PM
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I tried the 0-1 drill rod from my local machine supply. Works pretty easy. Once you have it to size, heat it up cherry red and drop it in a coffee can of vegetable oil. It hardens to the point where it's tough to scratch it with a file. I then chuck it in my drill press and very lightly sand with 800 grit paper to a nice shine. I't pretty cheap too, about a buck a foot.
Bill
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| blade, knife, knives |
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