A replacement scratchplate was required for a mandolin using black plexiglass. Two templates were made, one for the outline shape and another for a guide bush to make pickup opening. The plastic was sawn freehand and made oversize using a washer and pencil. Two side tape was used to mount it on MDF shape. A 1/2" bearing guided standard cutter was used to cut plastic. A climbing cut was used cutting at 20,000 rpm. The pickup slot was made using the template stuck down with tape. A 16mm guide bush was used with a 8mm 2 flute straight cutter. Again a climbing cut was used.