[Public-List] drilling SS

[Robert Alley]

Although not critical, bits used to drill SS are ground to a different 
angle than those used for mild steel, usually 135 vs 118 degrees. If 
you're only doing a few holes, its probably not worth the time or 
expense to buy new drills. 
See:http://www.jamestowndistributors.com/userportal/show_product.do?pid=456. 
Even with a drill press, you should use a prick punch to mark your hole 
center first to keep the drill from wandering. If you have trouble with 
your drill cutting, sharpen it.

Rob

On 11/3/2010 4:51 PM, Roger L. Kingsland wrote:
> Hi Folks,
>
> About to start drilling many 3/16" to 1/4" holes in 1/4" stainless steel
> (316) plates.  Can any machinist types out there please recommend drill bit
> type, lubricant, drill press rotation speed, anything else?
>
> Thanks very much,
>
> Roger 148
>
>
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