During electroplating and anodizing etc, electrical contacts must be attached to the part. At the connection point there can be small marks where plating does not occur. Today a customer commented on this in a decorative job. To avoid this we recommend to use CTM (Comments To Machinist) to clarify which surfaces are visible and must be free of contact marks. For example, if there is a hole thru a part with a top and bottom surface the normal process is to hang the part on a wire thru the hole. But if you specify that the top must be free of contact marks, we will arrange a different mechanical attachment method.
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