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Making pin drills

Advice on improving pin drills

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David Haynes27/03/2011 17:02:37
168 forum posts
26 photos
What am I doing wrong with my pin drills. I have a silver steel round, say 3/8", drill for pin size, create a cutting edge, harden and temper and yet it won't cut very well.
 
Any advice, thanks
 
Dave
David Haynes27/03/2011 17:31:06
168 forum posts
26 photos
800rpm may be ok for turning but not cutting! I'll try the slower speed. Any advice on getting the best shape for cutting edges?

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