My First Metalworking/machining Project, An Aluminum Knob On The Metal Lathe!

Wreck™Wreck said:
Use a spotting drill rather then a center drill, this works better all around, center drills are for creating lathe centers, stop me if you have heard this one before, spotting drills are designed for spotting accurate starting points for drills and nothing else, they have a 90 Deg. angle which leaves a pleasing 45 Deg. chamfer on the hole.
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Wreck, I have heard that many times from good sources and so do fully believe it, but to the best of my knowledge have never even seen one of these "spotting drills". Got a picture or link?

-brino
 
Bill Gruby said:
Make you own, it's nothing more than a regrind job on a drill point. You change the included angle to 90 degrees.
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Thanks Billy, I can do that!

My past searches have found a couple different types/grinds of drills called "spotting drills"....it always left me wondering which one people were talking about.

-brino
 
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