[modeleng] Re: Cast Iron Coolant

Hi Lee

I think that the carbon in the cast iron supplies sufficient cutting 
lubricant.   If you used coollant or cutting oil, I believe that the swarf + 
carbon would form a heavy sludge, which would gum up the cutter..

Cheers!     Hubert

----- Original Message ----- 
From: "Lee Grant" <leegrant@xxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Wednesday, October 26, 2005 11:58 AM
Subject: [modeleng] Cast Iron Coolant


> Hi All
> I have all ways been told to never to use coolant or cutting oil. when 
> turning or milling cast iron and never have. Has anybody got any ideas on 
> why this is.I think I was told that it would cause hard spots in the 
> iron.. You always use coolant when grinding cast iron or you will end up 
> with burn marks.
> Lee
>
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