I have a sheet metal part that will be put out for production soon, which has holes for wiring that need to be clean on both sides to prevent the wiring from being damaged. The sheet metal is very thin (1mm) and I am concerned that a bevel around the edge of both sides of the hole will create a sharp edge for the wiring. How can I specify on the drawing that I would like both sides of the whole to be deburred and cleaned by the machinists?