In the Pocket Toolpath, what is Pocket Allowance used for?
The Pocket Allowance allows you to quickly create a toolpath that will machine the pocket either smaller or larger than the defining closed vector.
A Pocket Allowance of 0.0 (the default) will create a pocket the exact size of the defining vector.
A positive Pocket Allowance value will make the pocket smaller than the defining closed vector.
A negative Pocket Allowance value will make the pocket larger than the defining closed vector
It is easy to visually check the toolpath in the 2D window to ensure the offset is doing what you expect by using the Solid preview option.
eg. Pocket Allowance values.