• Cut your straws to the desired lengths: The step-by-step photos for this tutorial show the largest of the three diamonds pictured. The lengths of the straws used are: six — 7 1/2″ straws (long), six — 5 3/4″ straws (medium), twelve — 3 3/4″ straws (short).
• Cut your muffler tape: Cut pieces of muffler tape in corresponding lengths to the straws. Because the tape is so wide, cut each piece length-wise; therefore one 6″ piece of muffler tape will cover two 6″ straws.
• Connect your straws: Time to connect the straws! Tape the end of your string close to the pointy end of your wooden skewer – this will be used as a needle to make threading the straws easier. Slide two long and one medium straw onto the string. Pull the string taut so that the straws form a triangle and tie a double knot where the two straws meet. Cut off excess thread.
• Rethread your straws: Rethread your needle if necessary. To create the next five sides, simply slide the needle through one of the long straws on the existing triangle (leaving a few inches of thread to tie off with) and add another long and medium straw; tie off as before.
• Construct your upper trapezoidal facets: To add the upper trapezoidal facets, slide the needle through one of the medium straws on the pyramid and add three short straws.

How to hide your knots:

• To tidy up the diamonds, use the skewer to push any knots visible at the intersections into the length of the straw.