Round corner intersections: 

Create fillets on any corner intersections with any radius. Simply specify a radius for your fillet and click on the corner intersections.

Single click trimming: 

Trim between intersections with a single click. The element is automatically broken in two and trimmed to the two intersections closest to where you clicked.

Snap flexibility: 

A wide variety of snap options makes it easy for you to select specific points in your drawing. Snap options such as “snap to intersections” and “snap to circles and arcs center points” can be activated separately, in combination or all at once.

Transformations: 

CNC-Calc includes all the transformation features expected from a modern 2D CAD system. Offset, mirror, rotate, translate and scale part or all of the geometry.  Create rectangular (rows and columns) and circular (full circle or circle segment) bolt hole patterns in seconds. This cuts down on repetitive tasks and saves you time.