Bob Blick wrote:
>> > I've seen those drill bits commercially but I have always made them 
>> > from
>> > broken drill bits. Chuck it in a drill press, spin it up, make the 
>> > pilot
>> > with a dremel tool and cutoff wheel. Then by hand, add a bit of cutting
>> > angle with the cutoff wheel.
>>
>> Fascinating. Can you explain the last sentence?
>
> They say a picture is worth a thousand words, see attached.

Indeed. Thanks!

Vitaliy 

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