Intro Make your own Cobra Punching Bag at home that is faster than some of the top brands on the market at just a fraction of the cost. To make it super easy I designed and produced a custom spring specifically for this purpose. I made it so that you can simply screw it onto a 3/4 inch galvanised steel pipe. If you have any questions please put them in the comments below and I'll respond as soon as I can. Also please share your thoughts and experience with others here if you make one. Items You'll Need: Kewlus Spring (KS9) - purchase here:  https://kewlus.com/products/kewlus-spring-v1 Base pipe: galvanised  3/4 inch pipe  (1.05 inches outer diameter) the length of roughly half your height. I used a 3 foot long pipe for my height (I'm 6ft tall). The 3/4 inch pipe has an outer diameter that is 1.05 inches. The spring is designed to fit perfectly onto this pipe. You can also combine sections of pipe using a coupling , for example 2ft section and 1ft section to allow re...

Today I unveil the very first prototype of the Kewlus Boxing Cobra - the weapon of choice for fighters wanting to sharpen their reflex skills! But it's not just for the pros - it's for everyone, including kids! For all the details and to be added to the Early Access list visit BoxingCobra.com right now (first come, first get)! See you in the next video!

10-Step Instructions: Get a ball - soccer ball or volleyball is ideal. Get a drain plunger and good quality duct tape and tape the plunger onto the ball, ensuring not to cover the air inlet. AmazonUS:  https://amzn.to/304M8eJ For the base get a 2 foot wide MDF or "particle" board. For the mast/pole, get a 1-inch diameter PVC pipe (in Australia this is referred to as 20mm; in US it’s referred to as 3/4 inch) - you'll need roughly shoulder height. AmazonUS:  https://amzn.to/2XopfRy For the base you'll need a short 1/2 inch galvanised steel pipe. The length of the steel pipe should be roughly 1 foot and will dictate the speed - faster with a longer steel pipe. AmazonUS:  https://amzn.to/2Xo2gpJ . You'll also need the corresponding flange to mount the pipe onto your board. Amazon US:  https://amzn.to/36Tbfm8 Attach the flange to one side of your board with thick, short screws. You will need to drill appropriate size pilot holes first to allow your screws t...