The 15-91 is a good machine for gear making since it has reverse, as opposed to a Singer 66 which does not. This particular machine probably isn't ready to sew as is. It will need a good cleaning and lube, and a going over to put it in working order. It may need some parts, or not. Because you're new to sewing, this may not be the best first purchase. One of the additional hobbies that can develop from making your own gear is rehabbing old sewing machines. When you're first starting out, don't get sidetracked into another hobby. Unless of course you thrive on your ADD.