Punching bags are part of the basic equipment for a boxer, but they can also be used as part of a home exercise regime or as a way to release stress and frustration. Well-made punching bags are sometimes out of reach because of price but they can be made at home, inexpensively, with a few supplies.
Select a shell. Punchbag shells are available in different materials, including canvas, leather, vinyl, nylon and synthetic leather. To minimise the expense, you can use an old army duffel bag. These bags are made of durable canvas, and the cylindrical shape is similar to that of a punchbag.
Prepare the weight. Pack 22.7 Kilogram of sand or sawdust into a plastic bag and shape it into a ball. Place this bag in several plastic bags and tie securely. This will prevent the sand or sawdust from spilling out if the punchbag bursts.
Line the punchbag. Use a layer of foam to line the inside of the punchbag. This will keep the bag free of indentations and lumps.
Place the wrapped weight at the bottom of the bag. Pack the space above the weight with filler, such as old clothes, rags or foam, as tightly as possible.
Use a scale to check the weight of the punchbag. According to Doug Werner in "Boxer's Start-Up: A Beginner's Guide to Boxing," a basic punchbag weighs about 31.8 Kilogram. If the bag weighs less, follow the directions in Step 2 to create another weight. Place this on top of the fabric or foam.
Close the punchbag by tying or zipping it up. For extra security, you may also want to wrap the opening with strips of duct tape.
Attach hanging chains to the punchbag. The chain should be strong enough to support the weight of the bag and long enough so the bag hangs at a comfortable level for you to use.
Select a sturdy spot from which to hang the punchbag. Ideally, this should be a ceiling beam. Screw a ceiling hook into the beam and hang the punchbag.
The contents of the bag will settle over time. Take the bag down and add more filler when necessary.