If you want to be a bit more this century and need to resharpen cutters
and get them correct every time you could make one of these .
Photo's in album Cnc cutter grinding.
This Cnc cutter grinder was published in MEW in 2008 143 through to
147.This simple 3 axis cnc machine was made mostly from scrap material
,eg the base is made from 6 inch wide channel iron with a few angle iron supports
welded in and uses studding for leadscrews .Requires no skill other than being able
to set and read a clock gauge to zero to set up . Is possible to set the
clearance angle to 1/20 th of a degree accuracy .Only made to sharpen the
fluted edges of cutters from 3 mm dia upwards ,i only use it for maximum
16 mm shank cutters but is possible to do larger with a different mounting .
Uses Quorn grinding wheelhead.
Photo of 3 mm and long series 16 mm sharpened endmills.
Will also easily sharpen end mills to tapered form to about 5 deg .
Photo of two 6mm endmills resharpened with 3 deg taper ,1mm
radius end done on Quorn grinder.
Photo of model engine compressor wheel machined tapered vane
Much more sophisticated machine seen here…
http://www.youtube.com/watch?v=qxU0K-TmEvI
They use the same method as i do to measure the cutter but their
system is much easier to use.
At a guess i expect it will cost a little more than an EMG 12.
John