For speedy metal removal and no concern on tool life use zig-zag cuts.
Make sure on a conventional cut that you stay away from your finish dimensions. Conventional cutting pulls the tool into the work.
But finishing: climb cut. And all cuts going in one direction for the cutter. Whether you use circular or linear paths to do your shape.
If you zig-zag on a finish cut, it will look like the step over was twice as much as what was used. So if that was acceptable, use half as many paths and go in one direction anyway. Takes half as long and looks better or as good.
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