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[Clansgian AT wmconnect.com]

> > I remember hearing that  
> they were used by lumberjacks because they could be sharpened and  
> shaped for two different kinds of cutting.  Issat so?

It is so.  One bit is honed very sharp for felling and limbing.  The other is 
sharpened at the same angle (25 degrees) but is rounded a bit to use at 
ground level and to cut through knots.  In the field if you used your well 
sharpened bit to cut through a knot, you'd dull it in a few strokes.  The 
purpose of 
the second bit is to save the edge of the first.   </HTML>