On Dec 12, 7:34 am, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:
...
The old guys just use a file in the field -- a new, clean, sharp one.
Most of them own a real chain grinding rig for the evening 'true' re-
sharpenings. Y'know; one of those things that looks like a compound
cutoff saw with an abrasive disk in place of the blade.
LLoyd

This works better than I expected it to:
http://www.harborfreight.com/cpi/cta...emnumber=93213