Dave,
Colour pictures are not the answer, as colour is not what you are looking for in spark testing. It is structure:
the lace and arrows and fineness of the spark pattern. The primary element you'll sort for is carbon. The rest of the metals are much harder to see, if at all. Low carbon...
Maui,
Congratulations on that accomplishment. Let me comment from the other side of the fence, so to speak. When I got my BS Met Engr in 197x, this state did not recognize Metallurgical Engr as a separate specialty. Others who graduated when I did went for Mech or Elec registration, I went to...
