I'll share a trick that I use:
 
To produce a pocket that has a large stepover, yet take a small stepover for the finish pass;
 
First, pocket the profile with the large stepover, specifying an amount of wall allowance equal to the amount you wish to take for a finish pass.
 
Then, pocket the profile again. This time change the stepover value to a very large amount (10") and set the wall allowance to zero. This will produce your finish pass(s).
 
All toolpath produced by the pocket routine have no offset, and therefore no cutter comp. If you wish to have cutter comp active for the finish pass, then set the wall allowance to a negative value equal to the radius of the cutter. Group the resulting tool path and change the properties of the tool path to have the appropriate offset. Left for climb milling.
 
Gene Bowen

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