Abstract: An expansion arbor adapted for use on a rotational arbor core comprising an arbor first end having an arbor first end opening, an arbor second end having an arbor second end opening and being spaced apart from the arbor first end, a substantially cylindrical body that defines a longitudinal axis, and a slit having a slit first end and a slit second end and extending along a portion of the substantially cylindrical body between the arbor first end and the arbor second end. A portion of the substantially cylindrical body adjacent to the slit is adapted to expand radially outward when the rotational arbor core is rotated so as to retain a sanding sleeve on the rotational arbor core. A method comprising placing the expansion arbor on the rotational arbor core, placing the sanding sleeve on the expansion arbor, and rotating the rotational arbor core.