Do you know, that… ?

W SOLIDWORKS 2019 there is a new option in the rounded and chamfer named Parameters partial edge. It allows you to perform an operation on a part of an edge by manually moving the end point, percentage shortening or indicated by reference.

Imagine structure, wherein the overlapping sections are combined two types of bracket. Due to the common rays occurs penetration.

By selecting a Chamfer in Partial Edge Parameters, I indicate the reference in the form of a face of the second object.

In this way undercut established only on the length of the tab and can dynamically update if you change the length of the overlap of the objects.