Suface grinder. You could probably find a good used one for about $3000.00
to $5000.00.
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"BillyBob" wrote in message
ink.net...

"Leon" wrote in message
t...

someone could come up with a fast reliable way to flatten the back of
a
chisel, I would be happy.

Bob

Flatten your chisel and plane irons on FLAT water stones. Really not a
problem.

Note that I said "Fast". I know I can get there with water stones, scary
sharp, etc. but none of these is very fast for flattening.

Bob