Use a Tennis Ball to Make Grinding the Curve Easier
It can be tricky to avoid flat spots when sanding a curved object like a shelf bracket, but sandpapering a tennis ball is much easier. The rounded shape of the ball helps you get the angle you want.
Of course, you can get the same effect using a rotary tool with sanding attachments , but if you don’t do projects like this (furniture, shelf brackets, curved drawer tops) often, a tennis ball and sandpaper will be much cheaper.
10 Unusual Uses for Tennis Balls | Instructables