THE TORUS

Start with a long rectangular aluminium panel and band it into a half ring.

Put the ring around a wooden cylinder with a thin and long hole on it and shape the panel over the hole. BANG BANG BANG! Then the shape of the inside circle of donuts come out.

Steel Sausage (not my hands)

Then use the small "steel sausage" to shape the long side to make it with beautiful curves.

Finally comes the Hand Polish again!
Ta-da! Nice and shine!