Making the setup for milling the flats.
I've calculated that I need to remove 0.033" per side from the blade in order to leave a cutting edge 0.030" thick.
The tilting table is set at approx. 5 degrees with the highest part toward me. I'll make a trial cut 1/2 of the amount I want to remove and see if it cuts 1/2 the distance to the desired runout toward the spine.
I had to readjust the tilt twice in order to get the trial cut 1/2 the distance toward the spine I want.
Now I just mill the flat, adjust the table upward the total amount I want, and make a finish cut.
This end mill has approx. .030" radii on the 4 corners, so it leaves a nice radius at the plunge shoulder. We don't want any sharp corners on the blades during heat treat to avoid stress cracks.
Last edited by Don Robinson; 04-22-2011 at 12:51 PM.
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