Above- 2 Minute video showing how to carve a circle with the layout jig method

Below- Step by step instruction using the compass method

Start with a slab of ice

Find the center with a layout jig

Using a layout jig & 2 ice picks, draw on a circle
Using a chainsaw, cut out the circle (stay on the outside of the scribed line)
More cuts will make a better circle (this is easier with a longer bar)
Notice the foam under the carving? This protects your saw<
Using a pistol grip sander, sand the entire surface
Using a used piece of sand paper break over the corners