[TheForge] Re: Burning Metal

Tue Nov 4 18:25:00 2003

Pete,

In addition to Ralph's question, how tight to the cast does it have to be?
I'd imagine minimal gaps?  Kevin

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Ralph Sproul
Sent: Tuesday, 04 November, 2003 4:54 PM
To: [email protected]
Subject: Re: [TheForge] Re: Burning Metal

Hi Pete, That's an interesting idea - I've never tried that, but would like
to.  Do you use something light like 1/4" or does it take 1/2 to keep the
oxidizing stream going?

Ralph

----- Original Message -----
From: "Peter Fels And Phoebe Palmer" <[email protected]>
To: <[email protected]>
Sent: Monday, November 03, 2003 9:13 PM
Subject: Re: [TheForge] Re: Burning Metal

> 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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