Materials Used:    1) 6 plastic cups

                           2) 6 mild steel finishing nails

                           3) 1 roll of paper towel

                           4) 1 measuring cup that can                   

                                measure up to 100ml

                           5) White vinegar

                           6) Distilled water

                           7) Ammonia cleaner

                           8) 1 marker

                           9) 1 Piece of paper to record your

                                results