Many craftsmen store stockpiled nozzles from angle grinders and often apply them in various ways. Modify the cutting wheel can in an ordinary drill, if it is installed correctly there.
The way to use small circles is quite simple, you need to clamp it between the two washers with a long bolt. The bolt will serve as a foot for clamping in the drill chuck, and when the abrasive comes out it can be easily replaced.
Sawing with a drill is more difficult than a grinder, and the speed is not enough, so do not take this device for thick metal. If you don’t saw, then grind, it’s still a good idea to use the remnants of the metal circles.