extractor so as to provide a greater surface area to contact the raised apertures or slots and mechanically desize the fabric or garments fig3 illustrates an abrasive panel 20 having a plurality of raised apertures 21 the panel 20 is rectangular in shape and extends across the rotating interior of the washer extractor the panel 20 is provided with a series of apertures which are along the entire length of the panel 20 fig4 is a cross sectional view of the apertures found on the metal panels of the invention the height of the wall members 15 16 of the aperature is about 0 2 to 1 cm preferably about 0 3 to 0 6 cm the width of the opening is about 0 3 to 1 cm preferably about 0 3 to 0 5 cm the raised apertures desize and abrade by impact and rubbing as on a grate the configuration of the apertures is not essential however the degree of the opening should be such as to prevent snaps buttons or the like from being caught which may cause damage to the garment or fabric the length of the panel is not essential its length is preferably the length of the rotary barrel the amount of protrusion of the panel 20 into the washer extractor is also not critical but should be sufficient to provide a striking surface and to cause the.