* The combination head sander can be operated in three models: platen up platen down or platen level with the drum * With the platen up the sander fuctions as a contact roller: For sizing with a 60 to 120 grit belt * With the platen in level position with the drum intermediate and final finishing is possible: For example using a grit sequence of 100 and 150 * The platen only mode (platen below drum) is frequently used for sanding repairs mars or lacquer with fine (120-180) grits *