Overlay the 3M™ Plastic Contour Sheet on adhesive, just after it has been applied to prevent air entrapment when adhesive is condensed and contoured into the repair area.As part of the plastic repair system, the 3M Plastic Contour Sheet allows users to perform repairs to plastic parts that would otherwise be impossible due to complicated shapes and contours. By spreading fast curing adhesive on the sheet and wrapping the broken part, you can create a smooth, evenly dispersed graft.