Abstract Good removable partial dentures are the results of: 1. A thorough, general examination of the mouth with roentgenograms. 2. A thorough prophylaxis, and the treatment of, and removal of all questionable teeth. 3. The repair of all carious lesions. 4. Obtaining a preliminary impression and study casts and articulating them. 5. Drawing a tentative design on study casts, preparing occlusal rests and teeth by grinding. 6. Obtaining an accurate impression after all teeth are prepared. 7. Remembering that the basis for all successful partial dentures is summed up in the words plan—design—construct. The principles of surveying, the significance of the survey line, the relation of the clasp to the survey line, and the opportunity presented by tilting the cast to control the location of undercuts are basic factors which will enable the prosthodontist to solve any removable partial denture problem.