Circular scrub plane. Flat on top with a chip slot. Front, back, and right side flat. Left side rod holding part protruding 3 cm in the middle of the plane on a 5x3 cm rounded rectangle. Hole 3x1.1 cm. With a 3.5 cm long vertical 0.7 cm wooden rivet for loosely holding the radius rod. All crafted from the solid. Rod 50 cm long with 26 0.7 cm holes results in 26 different radii from approximately 15 to 50 cm.