there are a few threads on here if you do a quick dearch. Chippers are not illegal as long as they only have one face. Any club with two faces is illegal, except a putter. That being said, a chipper is useless. It is a one dimentional club that is easily replicated with your wedge. The sole purpose of the chipper is to teach you to use a putting swing to hit chip shots, so with your wedge, use a pendulum swing to hit the ball. And you don't even need to buy another club!!