The master level mirrors the IMP. The intermediate level is usually found in the proposal and contains all the end-to-. end activities, but at the âmacroâ level. The detailed IMS is usually a rolling wave planned at the week level.
Instructions. 1  Baking soda Baking soda is the best household item you can use to get the accumulated gunk off your old bathtub. 2  Mix two parts of baking soda and one part of hydrogen peroxide in a small glass bowl. 3  Apply this paste on your enameled bathtub or sink and let it set for about 30 minutes.nstructions. 1  Baking soda Baking soda is the best household item you can use to get the accumulated gunk off your old bathtub. 2  Mix two parts of baking soda and one part of hydrogen peroxide in a small glass bowl. 3  Apply this paste on your enameled bathtub or sink and let it set for about 30 minutes.
How to Repair the Porcelain Sink Enamel. 1  Clean and rinse the sink thoroughly to get rid of any soap residue. 2  After the sink has dried, use a small piece of emery cloth to sand the damaged area. 3  Be careful not to sand the surrounding undamaged porcelain or you will create visible scratches. After the sink has dried, use a small piece of emery cloth to sand the damaged area. 2  Be careful not to sand the surrounding undamaged porcelain or you will create visible scratches. 3  After sanding, clean the area with denatured alcohol and a clean cloth. 4  Allow it to dry.