Total stock changes the rough or finish operation to use a constant offset distance from the profile of a profile feature. So instead of cutting to the stock boundary, which may already have been cut away, and without having to specify a stock curve, you can still minimize redundant cutting by using Total stock.
This example shows a toolpath without the Total stock attribute set.
This is the same example with Total stock set to 0.25 inches:
This is the same example with Total stock set to 1.0 inches:
