I made a run to Walmart and Harbor Freight and purchased the basic components. The magnets are strong welding magnets and come in a pack of 4. I ended up modifying this contraption by attaching the pizza pan to a bat with glue squares. I also added round magnets under the strong welding magnets because the others had a tendency to release from the pan if I got the wheel spinning too fast. A permanent marking on the pan of a series of concentric circles was another modification. I have been very happy with the homemade version and plan to make a larger one with a bigger pizza pan. Right now it works well for altered bowls, which is the main thing I wanted it for.