Fit the punch into the upper seat and the die into the anvil seat below, choosing sizes suitable for the eyelet and checking that they are well aligned. Mark the position of the eyelet on the material and make the hole with a punch of suitable diameter. Insert the eyelet shank into the hole from the right side and place the washer on the back. Place the piece on the die, with the part to be clinched facing the punch, and operate the lever with a firm, regular movement until the eyelet is clinched. Return the lever to its rest position, remove the material and check that the eyelet is secure. For a clean result, test first on an offcut of the same material. Do not force the lever beyond its travel and do not use on materials that are too thick or hard. Keep your hands away from the pressing area during use. After use, remove residues, lightly lubricate the moving parts and store in a dry place.