I had the idea of using a small stainless steel hatchet as a cut-off tool for forging. It seemed like a good idea – stainless is not very sticky and it’s pretty tough stuff.
Physics doesn’t show mercy to anyone; that’s why you should always want to have physical law on your side like a proper taoist.
The problem in this case is that the thinner edge of the hatchet heated up faster (because it’s less thermal mass) when in contact with a larger thermal mass of much much hotter wrought iron. I gave it two taps on the back with my hammer and it appeared to be going into the iron. When I took it away, there was a little scratch in the iron. This is why blacksmiths tend to constantly be worried about the melting temperature of their gear – it actually does melt sometimes.
If you’re interested in blacksmithing stuff, there’s a fellow named Torbjorn Ahman, [youtube] who does very good videos of blacksmithing processes. He is very meticulous, and all of his work is based on a deep consciousness of the underlying time/temperature/toughness of the materials and the working. Often, he makes his own tools, and I’m watching the video going, “why is he making that out of hardened S7 tool steel?” Well, this is why.
Lofty says
Stainless steel is good for cheap cutlery, cooking pots and boat fittings. Outside of that it’s one of the nastiest engineering materials around to work with.
kestrel says
You *probably* didn’t laugh… but in a way, that is kinda sorta funny. Looks like some really tough, bad-ass mice were chewing on it.
I never would have thought one could find a ss hatchet. In my house it’s something that cheese-making equipment is made of, not something for splitting kindling.
Charly says
Stainless steel hatchet? I have never seen one that was not for decorative purposes only.
If it is magnetic stainless steel, then it might work (so called martensitic stainless steel), but if it is non-magnetic, then it is austenitic stainless steel, that is un-hardenable and therefore useless as a hatchet or any cutting tool whatsoever. A wall hanger.
Marcus Ranum says
Charly@#3:
If it is magnetic stainless steel, then it might work (so called martensitic stainless steel), but if it is non-magnetic, then it is austenitic stainless steel, that is un-hardenable and therefore useless as a hatchet or any cutting tool whatsoever. A wall hanger.
Well, I “tested” it. Apparently it is the wall hanger kind.
I’m going to make a chopper out of S7. That’ll take all day on the grinder; if the hatchet had held up I’d have been able to use it with no additional investment in time or effort.