The Tangify tool function smooths the connection between selected Arc Circuits containing any angles below the specified degree in the Tangent Threshold field.
This will create a seamless transition between arcs for smoother cuts.
In comparison, the Tangify All Circuits function smooths the connection between all Arc Circuits of the design containing any angles below the specified degree in the Tangent Threshold field.
Tangent Threshold Definition
Tangify All Circuits Definition