Article: Head to your local hardware store for two 6-ft two-by-fours, two 17-by-17-inch squares of plywood, two 14-by-14-inch squares of carpet (or fake grass) and two 3.5-inch pieces of PVC pipe, each with a 4-inch diameter. Cut each two-by-four to 17 inches in length. Create a 17-by-17-inch square by cutting the ends of each of these four two-by-fours at 45-degree angles with a miter saw or box saw. Ensure that they can fit together to form perfect 90-degree angles in order to give the corners of the box a more finished look. Alternatively, cut two pieces of two-by-four to 14 inches (35.6cm) and another two to 17 inches (43.2cm). Place the shorter pieces between the longer ones; this will still give you a 17-by-17-inch square without the hassle of making angled cuts. You may use plywood, OSB, or any type of wood that suits your budget and playing needs. Be sure to lay the two-by-fours down on their narrow sides, not on the fat sides. Cut PVC pipe into two sections of about 3 ". You can also use other type of pipe but PVC is best for durability and budget. Flip the carpet face-down and, using a straight edge, trace two diagonal lines connecting the opposite corners. This will mark the center of the square. Center it according to the X you drew in the previous step and, using a marker, trace both the inside and the outside of the pipe onto the fabric. Using the utility knife, first cut the smaller circle out of the carpet. Try to keep the shape intact and set it aside, as you will need it later. Then, cut the remaining larger circle out of the carpet. Since you will not need this piece later, don't worry about keeping it intact.

What is a summary?
Gather your materials. Cut four pieces of two-by-four to create a square. Create the targets using PVC pipe. Draw an X on the backside of your square of carpet. Trace the PVC pipe onto the center of the backside of the carpet. Cut the traced areas out of the carpet.