1. After drawing the drawing with autoCAD program, click the "Output" option in the "File" menu to save the file as a "dxf" file type (if the FastCAM program supports "dwg reading in", it can be directly saved as a "DWG" file type). If you can't close the drawing consistently during the FastCAM call, click Clean in the Setup menu of autoCAD program.

2. Open the FastCAM program-click the file menu-select DXF import (or DWG import)-check the CAD clearing option in the pop-up window (check the CAD trimming option at the same time)-select the part file to be programmed-select Yes in the pop-up remove block window-click. Off) option (plasma is used for plasma cutting, which is marked as powder spraying, that is, powder spraying on the steel plate to check whether the procedure is correct, and is generally not used)-Select "Left" in the pop-up window (this is the slot compensation option, and the cutting direction is different when selecting "Right". You have to choose to start cutting from the inner cavity first)-the cutting point is selected on the left side of the part, at right angles-select Yes in the pop-up window where the lead-in line is added (if you cut a circle, the external and internal options will pop up, and the nearest control point will be selected in the next pop-up window according to the actual situation)-select a straight line in the pop-up window (generally, the straight line is selected as the lead-in line). Generally, an arc or a semicircle is selected when cutting the outer circle)-Enter the length of the lead-in line in the pop-up window (the thicker the plate is, the longer the lead-in line is, and at least 20 when the thickness exceeds 40mm)-Enter the included angle between the lead-in line and the first slit in the pop-up window (select "Left" to note that the cutting direction of the inner cavity is counterclockwise and the cutting direction of the outer frame is clockwise, so as to ensure that the trimming is supplemented in the leftover material.