Who says “coupons” are just for grocery shopping.  To provide the best cut quality from your cutting machine, it is wise to do a “cut test coupon” before using the machine on production parts.  A rectangular shape with holes will provide you with your current machine’s cut quality.  This test should be performed either every day or the beginning of each shift.

Use a Digital Micrometer like the one shown here.

Once this part is cut, the operator should use a calibrated digital micrometer (pictured above) to check the tolerances in both the X and Y axis on the coupon. Ideally, on a Hy Definition plasma system these should be at 5,000’s.  If they are not, further investigation should be focused at torch level and or the motion on either axis.