(Do not miss the step-by-step video at the bottom of this post!)
There are many benefits to buying an unfilled bag and doing it yourself. An unfilled bag is cheaper, you pay less for shipping and you can also customize the bag according to your own personal preference. If you want it harder, you fill it more. If you want it lighter for more movement, use less filling. If you want it heavier, add more sandbags to the middle. There are tons of options when choosing an unfilled heavy bag. The best part is that you can personalize it for yourself and your specific boxing style.
There are many approaches to filling an unfilled heavy bag, but keeping it simple here is the most basic way.
First, gather as many old clothes as you can. Clean your closet, ask your friends or get your fighters to donate. Get a decent amount because you will need more than you think.
Then create a base and top piece out of cardboard or foam. Assemble about 6-8 pieces and secure with duct tape. Each should be about 1 inch thick. This can make a big difference in the look and feel of your heavy bag as it helps maintain the bags’ shape and form from top to bottom.
After adding your bottom base, start by filling about 6 inches of clothing for your first coat. Pack them off with a broom handle, a cane or pole. Focus on the edges and work the fabric into the gaps or “pockets” that form to fill the space.
After the first 6 ”, add a sandbag to the middle. You can use a storage-sized zippered bag, fill 3/4 of the way full and fasten it with packing tape so it does not leak. Each gallon-sized zippered bag, half-filled with sand, will weigh about 5-6 pounds. Try to keep the sandbags cylindrical so that they fit right in the middle of the bag and then pack the cloth filling tightly around it. That way, the sandbags are less likely to move to the edge and make any hard spots on the bag.
From there, just keep going around the bag every 10-12 ”. Add as many sandbags as you want as you create low sandbags and cloth, until you reach the desired weight.
Finally, cover your bag with your second, pre-cut cardboard piece and close it. Although the contents of the bag will sag over time and have a smoother appearance, you can twist the bag on its side after it is complete and fold off some of the lumpy spots to make the bag more uniform.
While purchasing an unfilled bag may require a little more work, it can help you achieve the most desired results at less cost. On top of that, it puts you in control and allows you to build a heavy bag that fits YOU perfectly.
Buy our choice of unfilled heavy bags.