Presuming that it is desired to clean the gilt case of the clock, the movement must first be taken out. Unscrew the bell at the back, and take off the pendulum. Undo the two screws at the back rim that hold in the movement, and draw the clock out from the front. The gilt case will be found to be made of many pieces held together by nuts and screws inside. Take it all apart and get every piece separate. Then well wash with a plate-brush or soft tooth-brush, using hot soap and water to which soda has been added. Rinse thoroughly in clean water, hot first, and then cold. Let the parts drain, and dry them thoroughly in warm, dry sawdust before a fire. Then dust off the sawdust with a soft brush. In putting the parts together again, handle them with a clean duster or a leather.