On Sunday, September 18, 2016, Roy  wrote:

>
> GGG,
>
> Tonight at our monthly Hand Tool gathering, a splinter group of the Houston
> Woodworkers Club. we hit a stone wall.  Someone wanted to know how to
> sharpen
> Yankee drill bits.  Even Mr. Leonard Lee's fine book did not cover this.
> Previous searches on the internet had found no instructions.
>
> I think I found directions somewhere on this list, years ago.  Will take
some poking to refind them, if they weren't a figment of my imagination.

But the simple answer was to use a stone with two tilts, downhill from
center, and slightly tilted for a relief angle.  I used a DMT diamond
sharpener, blue.  Worked much better after. I have even salvaged a broken
bit that way.

I can figure out the angles on an existing one in a day or two if it's
really important, or you can just guess.

Kirk Eppler in Half Moon Bay, CA, giving up for the day.


-- 
Sent from my iPad, apologies for the Auto Correct errors.
Kirk