Using V21, When you are laying out a drawing there has to be a dashed on the right face of the part to allow the software to know it's ok to go through the line. I get that, and when there is enough stock to remove you get enough room to create the line it's no problem. But where I' having problems is when there is no room to create the line. For example, if the drawing begins with a simple rectangle 1.5" high and 6" wide - representing a dowel rod. I only need to cut, lets say a groove in the center, so I draw the groove-the dowel is still 1.5" high and 6" wide except for the groove in the center. There is no room on the face - the right side of the part to convert a dashed line. I"ve tried extending the line upwards - let's say 1/2" inch - and that leaves clearance for a that line to become the dashed line. but then you can't zero the cutter on the stock without manipulation ( backing off the X axis, in this example 1/2" ) when zeroing the axis's on the control program (Mach3) before running the gcode. Is there a better, simpler way? Or am I missing something? Any input would be appreciated. Thanks, Jeff