In the Profile Toolpath, what is Allowance Offset used for?

The Allowance Offset only applies to the Outside / Right and Inside / Left options. It provides a quick and easy way to calculate different size toolpaths using only one defining vector.

  • For the Outside / Right option, a positive offset value will leave more material on the outside of a closed vector or to the right side of an open vector. Likewise, a negative offset value will remove more material from a closed vector or leave less material to the right side of an open vector.

  • For the Inside / Left option, a positive offset value will leave more material on the inside of a closed vector or to the left side of an open vector. Likewise, a negative offset value will remove more material from the inside of a closed vector or leave less material from the left side of an open 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