When the corrugated specimen emerged from the fluting rolls, place it on the rack so that approximately equal lengths rest on the flat surfaces at each end of the rack. Place the comb over the corrugated test piece and press down so that it is held firmly in the valleys of the rack, ensuring that the specimen is bottomed evenly in each of the flutes. Flatten the ends of the corrugated test piece to facilitate the further removal of the test piece from the comb, then place a strip of the adhesive tape, at least 120 mm long, adhesive side down, along the tips of the flutes and apply pressure to the tape in contact with the tips of the flutes and the test piece ends. Carefully withdraw the comb from the flutes without damage to the test piece, and lift the resulting 10-flute composite test piece out of the rack. If more than 10 flutes are formed, crush the extra flutes by hand prior to testing.