You’ve got your stock secured to the wasteboard, gcode loaded, and you’re ready to pull the trigger on that play button…
But WAIT! Did I put the right sized stock on?? Am I sure that I scaled my file correctly to fit the size stock I have?? Is the stock square to my machine’s X and Y axis?!? My gantry is in the way of me accurately measuring my workpiece!
Ohhhhh but wait! I have the “Check Size” button! I’ll press that and (after pushing Z up by 1 or 2mm) the machine will automatically move away from the home location along the X,Y limits of the file I want to carve and trace a box around the whole outer limits of the file! (Also will compensate for bit size and trace the limits on the edge of the cut)