[TheForge] Re: Burning Metal

[Peter Fels And Phoebe Palmer]

One can use a sacrifice piece of steel to sustain a torch cut  in cast 
iron..carbon isn't the critical factor..plain iron seems to be...PF

Andy Gladish wrote:

>>I think if the carbon content was the accelerating factor, cast
>>iron should
>>cut easily.
>>The  best I can do on cast iron with an O/A torch is a very sloppy cut.
>>My plasma torch however cuts it easily.
>>chuck-
>>    
>>
>
>I think that what is happening when I use an O/A torch to cut cast iron is
>that the preheat is melting the metal and the oxygen jet is blowing it
>aside. Way different from the sharp, clean cut (burn) I get with steel when
>things are set up correctly.
>So, a torch will 'cut' things that it can't 'burn'.
>Andy G.
>
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