Subject: Re: M42 cobalt steel drill for stainless steel?

From: [email-masked] (LWC1220)
Date: 14 Sep 1996 21:06:37 -0400

In article <[email-masked]>, [email-masked] (James D.
Szura) writes:

>[email-masked] (stevec) wrote:
>
>>
>>        Is there any advantage to use cobalt steel bits on stainless 
>>over carbide bits?
>>

  I don't know what type of stainless you are cutting, But my experience
with type 304 and 316 is that the sharper the cutting edge the better and
you can sharpen cobalt a lot sharper than carbide.

                                             Hope this helps
                                                   LWC

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From: [email-masked] (James D. Szura)
Date: Fri, 13 Sep 1996 00:39:23 GMT

>        Is there any advantage to use cobalt steel bits on stainless 
 Unless you have a very rigid setup, you are more likely to break a
carbide drill. A cobalt drill will handle a great deal of abuse.