Step 3: Now that the bottom is cut to the shape of your fixture determine how tall you want the sides of the planter box. Cut a long piece of wood to the desired height (we made ours 5” tall). This long piece will be cut to create the angled sides of the planter.
Step 4: Next, use a protractor (or simple math) to determine the angles of your shape. All side angles should add up to 360. Divide each angle by 2 to determine the angle at which the sides will be joined. Our hexagon base was made up of six 60 degree angles; so we divided that by 2 and set the miter saw to 30 degrees.
Step 5: Measure the length of a side of the hexagon base (ours were 3”). This measurement will also be the interior length of the sides of the planter (since the cuts are angled out they are slightly longer at on end).
Step 6: Take your long piece of wood and make your first angled cut on one end. Measure over from the interior of that cut by 3” (or whatever your side length is) and mark it. Flip the wood and make your second cut. (You’ll know your cuts are correct if they are trapezoids, not parallelograms.) Continue measuring and flipping and cutting until you have all six sides cut.