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This is a second attempt at a hot cut hardie. The old one worked very well, but since it was made from rail road spike material, it did not have much durability. I have acquired case hardening powder (smells like cat urine! Eugh!) to harden the old one and that worked alright, but I wanted something better.
I made this tool from a section of crow bar that I hardened in hot brine water and tempered by allowing the excess heat left in the bottom portion bleed back into the cutting edge. A nice bright blue temper was achieved!
I made this tool from a section of crow bar that I hardened in hot brine water and tempered by allowing the excess heat left in the bottom portion bleed back into the cutting edge. A nice bright blue temper was achieved!
Category Crafting / All
Species Unspecified / Any
Size 555 x 590px
File Size 369.3 kB
Oil quenching is meant for oil quenching steels. You don't case harden with oil, you case harden in a flask filled with charcoal powder at extreme heats or with Cherry Rd case hardening chemicals, or similar.
You can quench in water, but it does a bit more strain on the steels crystalline structure, which is why I went with hot brine water.
You can quench in water, but it does a bit more strain on the steels crystalline structure, which is why I went with hot brine water.
I tend to use used motor oil which has A bit of carbon built up in it. Usually I tend to have my container of oil in A water bath My smithing is usually done on the cheap with unknown bits of scrap. I heard about the techniques you've talked about but never used any of the assorted chemicals. i'm just having fun not trying to get fancy or spend much.
You can test your pieces of scrap at a grinder for the sparks. https://content.invisioncic.com/r22.....1214904317.gif http://images.yuku.com.s3.amazonaws.....2b7fe6b91d.jpg You can also find if it is a hardenable tool steel by heating it up to a bright red, near to orange colour. Then you swish it around in water and test the hardness of it with a file. If the file skates across, it's hardened, if not. It is not hardenable, or you've accidentally drew a temper from not quenching it all the way in the water.
Don't play around with pseudosciences. Oil may have a bit of carbon in it, but so does a solid fuel fire. It's not really going to soak in that much, more so it will take out carbon if you heat it up too high.
Don't play around with pseudosciences. Oil may have a bit of carbon in it, but so does a solid fuel fire. It's not really going to soak in that much, more so it will take out carbon if you heat it up too high.
Should show me your work some time, I'd like to see it. Making hardie tools a bit of a tricky task if you don't have decked out shop full of all the stuff you need. I do not really have that luxury. I'm an intermediate smith when it comes to hands on skill. You can make hardie tools out of all sorts of things, but my little Fisher-Norris anvil takes 5/8ths hardies.
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