DIY Slam Ball

Materials:

Rubber Basketball

Playground Sand

Funnel

Isopropyl Alcohol

Tire Patch Kit

 

Slam balls are a great tool for developing explosive power and working on conditioning with a functional, full-body movement. In addition, a slam ball can be used place of a medicine ball. While a commercially produced slam ball can be a bit expensive, you can make your own for a fraction of the price.

Mark the Cutting Area

Mark the Cutting Area

Start by laying a patch on the basketball. Mark the perimeter of it, so when you cut the hole, it doesn’t exceed the patch. Now, cut an X into the basketball. Insert the funnel, and fill the basketball with sand. A basketball can hold as much as 25 lbs. of sand. You may need to shake the ball as you fill it to help the sand settle out evenly.

Fill with Sand

Fill with Sand

Once the ball is filled to the desired weight, set the ball with hole right at the top. Shake the ball lightly to allow the sand to settle away from the hole. Reach into the hole and try to brush away any sand that might be stuck to the underside of the X. Wet a paper towel with the isopropyl alcohol. Use the paper towel to clean the inside surface of the basketball near the hole.

Clean the Patching Area

Clean the Patching Area

Follow the instructions on the tire patch kit to apply one half of the patch to the inside of one half of the X-hole in the basketball. Hold the patch in place until the rubber cement begins to set. I used a wooden shim to help keep the patch in place. Once it’s set, allow 12-24 hours for the cement to fully cure. Once fully cured, repeat the process for the other side. Apply rubber cement over the cuts of the X liberally to ensure a good seal.

Place the Inner Patch

Place the Inner Patch

After the inner patch is fully cured, prepare a second patch for the outside. Follow the instructions on the patch kit, and apply it over the X. Again, wait 12-24 hours for the cement to cure, while occasionally checking for full adhesion. If necessary, add a little more rubber cement to any areas that don’t appear to be adhering.

Place the Outer Patch

Place the Outer Patch

Once the cement for the outer seal has cured, press on the ball and listen for air leaks. If there is a leak, try to locate it and add rubber cement to close it. When there are no more leaks, test the slam. I did this by dropping the ball form a moderate height. I did this to avoid the eruption of sand that might occur form a full slam if the patch didn’t hold. If the drop test is successful, proceed to a full slam. If the slam is successful, keep calm and slam on!

DIY Slam Ball

DIY Slam Ball

As always, let us know how this project works for you in the comments below, or over on the Facebook page.

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