Re: Another stuck one!!

Posted by Wardner on September 17, 2006 at 22:26:26 from (4.154.242.217):

In Reply to: Re: Another stuck one!! posted by JayWalt on September 17, 2006 at 21:43:12:

Cast iron will throw off a red-orange spark. Sometimes the spark will "explode" after traveling a foot or so.

Steel sparks will be yellow to orange and usually incandess longer on their way to the floor.

Get some old metal scraps and grind them to get an idea. I don't recommend that you use your mother's cast iron frying pan. Use an old water pump or something similar. Do it inside or in the shade for a better look.

Don't assume that any bulky or molded ferrous item is cast. You should google on forged steel to get an idea of the process. Cast iron is very stable after it has been aged for awhile. However, it has nowhere near the strenght of the cheapest steel.

Steel is rarely cast. Stainless steel is more likely to be cast using lost wax investment molds. You see alot of that stuff in marine applications

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