useful and simple tool for 3D post printing. sanding evenly and flat, avoiding excavations and more precisely dosing the sanding force. the fingers themselves press in the act of sanding the paper, preventing it from escaping. low consumption of sandpaper and the possibility of sanding even small pieces well. cut a strip of sandpaper as wide as the finger_sander but with double the length of the same and apply it to the tool. no print support . brim o raft required. depending on the accuracy of your printer, it may be necessary to remove with a cutter the lower part of the rings where the edges of the vetarated paper strip must be inserted