Instructions
Find yourself a hard plastic card such as a gift card or an old member card that you do not use anymore.
Measure a rectangle-shaped area about 2 by 3 inches. Mark the measurements.
Cut your card to fit the dimensions marked in Step 2.
Measure 1 inch from the top of your card and a half-inch from the side of your card. Cut the side of the card up to your marked half-inch point. From the bottom of the card, cut upward in order to remove the 2 inches by a half-inch section. You will have a rectangular shape with dimensions of 1 inch by a half-inch section.
Determine the center of your newly removed section. Measure about one-forth down from the top, then measure one-sixteenth to each side of the mark recently made.
Cut the section out from Step 5. You should have a section about one-fourth-inch deep and one-eighth-inch wide.
Cut the corner of the section that was 1 inch by a half-inch at a 60-degree angle.