Concave-Radius End Mill

[cjtoombs]

I would use that cutter as the last operation on that surface, as in example A, if I could. The overall geometry of the part will determine which way I would go, but that would be my starting preference.

 

[CrossSlide]

I'll go with option A. Thanks everyone.

 

[jamie76x]

Now we understand. Option A is the only logical way to do this. Also as someone pointed out to do it on both sides with a radius cutter rather than do top and bottom with one cutter. Some smaller machines will tend to chatter more with the larger cut.

 

[jamie76x]

And to add one more thing to think about .... The concave cutter will be less useful in the future than a radius cutter. If you had to buy a cutter for this part, it would be a better investment to buy the radius cutter.