| 摘要 |
Afoot sanding disc includes a hub; a concentric abrasive disc having a diameter smaller than the hub diameter. A shaft concentrically attached to the bottom surface of the hub has a free end and a central cavity of a determined shape extending from the free end to a determined depth into the shaft. The shaft is shaped, sized and configured to matingly receive within the cavity a portion of a mandrel attached to an output shaft of a motorized rotary tool, thereby operably coupling the disc to an output shaft of the motarized rotary tool. A circular recess concentrically formed in a top surface of the hub receives the abrasive disc. The abrasive disc is devoid of a central aperture. The hub may include a thermochromic material in a concentration effective to cause a change in color when the hub reaches a predetermined temperature. The hub may also be rigid or flexible.
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