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- Break all edges.
- Secure the blank in two vises. Use one to hold each end.
- Set the speed to 5000 rpm, and the feed to 2 ipm.
- Turn on the coolant.
- Plunging .030" at a time, cut the slot. Power feed is your friend.
- Once you have reached the desired depth, test the slot width with the Fin Preform. Run .005" finishing passes until it fits snugly.
III. Machining the Taper
This process is for a tapered end mill. First you calculate the y and z positions for the final pass. Set the z and slowly work in the y a little each pass.
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