Posted by David Sherman on Monday, February 07, 2005 at 2:30PM :
In Reply to: OT: How do you tell the difference between a Cast and Forged posted by Will (in MI) on Monday, February 07, 2005 at 1:15PM :
I haven't tried this on a crank, but in general cast steel will make few if any sparks from a grinding wheel, whereas forged will make lots of sparks.