So? You took up smoking? LOL Quitchet?I have a steel desk with a cast iron ashtray on it, My magnets LOVE both.
Cool, a fellow spark tester!Spark it on a grinding wheel. Mild steel will usually show a nice orange
spark with a burst on the end. Cast iron will show a short dull orangish
straight spark close to the wheel. Just a touch should tell you.
I really wasn't a spark tester but I am a toolmaker and I had to do a little spark testing at Ford but we had a heat treater in the toolroom that was phenominal at sparking. He could hit a piece of steel or iron against the spark wheel and tell you in about 2 seconds what it was. Awesome. I just know the differnce between steel and cast iron. I usually tell by drilling a hole in it. Steel will throw a curly chip that sometimes will turn blue. Iron throws a chip that is like dust or granular sometimes in clumps and never turns blue.:whiteflagCool, a fellow spark tester!
Can't do it anymore but when I was good, I could tell the difference in
50100-B and 1095, which was my highest spark testing achievement.
50100-B ~= 6195 ~= W7 tool steel
But the trick to it to have known samples to test against side by side.
Alvin in AZ