Use with thick materials such as plywood, carpet, leather, mat board, corrugated cardboard etc.
The circle diameter is variable between 70mm and 300mm simply by adjusting the centre pin position.
Centre pin and blade are to be adjusted for depth toward you.
Do not try to make an initial deep cut, but it is recommended to move the cutter several times or more, gradually increasing the depth of cut with each stroke.
Circle diameter: 70mm x 300mm