Ive gotta ask, `What is the floor thickness at the bottom of the pocketÉ
Can your machine go any faster RPMÉ
Where I work, we`d just use the .125 endmill for the entire pocket, that way you don`t have to worry about blending two cutters. Or else we`d run the second cutter 0.002 inches higher that the first.
As far as deep pockets go, for finishing the walls, I`d use a long reach endmill with relief ground after the cutting length. Say if you are gonna take .25 inch deep cuts, relieve the cutter so the flute are a max of 0.3 insches long. This will reduce your area of contact, and should help keep your walls nice and square.
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