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Wrap a flexible measuring tape around your wrist and add at least 2 inches (5.1 cm) to the measurement. Then, cut your firm material, such as cord or leather, into 4 equal pieces according to the new measurement. Although you can use a thick yarn, your round bracelet won't be as sturdy as a bracelet made with leather or cord. Hold the 4 pieces near 1 end and tie a knot about 1 inch (2.5 cm) from the end. Then, lay the knot on the table and place a piece of tape over it so the knot doesn't slide around. Separate the 4 strands so they fan out and away from each other. If you're using 2 colors, alternate the colors when you arrange the strands. Make the knot at least 1 inch (2.5 cm) away from the bottom of the strands. Then, peel the braid off of the tape and wrap it around your wrist. Tie a knot using both ends of the braid so it doesn't slide off of your wrist. If you can't tie the bracelet yourself, ask a friend to help you or tie it before you slide it onto your wrist.
Cut 4 strands of cord, leather, or thick yarn into equal lengths. Gather 1 end of the strands in a knot and tie it to your work surface. Make a knot when you reach the end and tie the bracelet around your wrist.