الرئيسية
The how's and why's of what drill configuration is needed depends on the drill material and the job requirements, the capacity of the drilling machine as well as the means (off-hand included) of sharping the drill/s.
There are not any of the various drill sharpening configurations that cannot be done by hand (ie "off-hand") - it just takes practice - same as sharpening lathe or fly-cutter tools etc.
A final "lick" to the cutting edges with ahnd-held diamond hone improves edge sharpness and longevity quite a bit.
Sometimes a relatively minor drill re-sharpening only needs another lick with the hand-held hone.
There are not any of the various drill sharpening configurations that cannot be done by hand (ie "off-hand") - it just takes practice - same as sharpening lathe or fly-cutter tools etc.
A final "lick" to the cutting edges with ahnd-held diamond hone improves edge sharpness and longevity quite a bit.
Sometimes a relatively minor drill re-sharpening only needs another lick with the hand-held hone.
