I watched a few KZfaq videos copying my method of repairing a broken racquet. It's good because it shows that people can DIY and find it useful. You can actually use whatever way to fix a racquet but at the end after the racquet is fixed, the result must achieve: 1. The repair must be able to sustain the maximum tension of the string that the manufacturer recommended. At least, it can take up to 25lb. 2. The fix must not affect the balance. If the balance is off the racquet is not good for playing even though it can sustain the tension. In order not to add unnecessary weight, DON'T insert wooden/iron sticks inside the frame. If you do so it will be too heavy on the fix. Not just the balance between left and right of the frame is off, the balance between the frame and the grip is also off. You just have to keep the frame hollow or fill it with Styrofoam. When you apply epoxy on the carbon fiber, squeeze out excessive epoxy as much as possible. You want to minimize the weight impact to the balance.