REMEMBER IS DEPEND ON THE DIRECTION YOUR MOVING OF THE CUT. G41 LEFT , G42 IS RIGHT OF COUNTOUR The control system automatically calculates the required equidistant tool paths for the programmed contour for the respective current tool radius. The control system is working with tool radius compensation in the selected plane G17 to G19. A tool with a corresponding D number must be active. The tool radius compensation is activated by G41/G42. G40 Tool radius compensation OFF G41 X... Y... ; Tool radius compensation left of contour G42 X... Y... ; Tool radius compensation right of contour Note The selection can only be made for linear interpolation (G0, G1). Imagine your walking along the contour path following the tool. If the tool is on the left then its G41 and on the right its G42 N10 T1 N20 G17 D2 F300 ; Correction number 2, feed 300 mm/min N25 X0 Y0 ; P0 - starting point N30 G1 G42 X11 Y11 ; Selection right of contour, P1 N31 X20 Y20 ; Starting contour, circle or straight line M30 After the selection, it is also possible to execute blocks that contain infeed motions (Z) or M outputs: N20 G1 G41 X11 Y11 ; Selection to the left of the contour N21 Z20 ; Infeed movement N22 X20 Y20 ; Starting contour, circle or straight line <- this line moves bit as G1 is active