We claim the ornamental design for a benchtop sanding board having a cooperating slot and clamp to retain an abrasive sheet, as shown and described.
FIG. 1 is a front top left perspective view of our new design for a benchtop sanding board having a cooperating slot and clamp to retain an abrasive sheet.
FIG. 2 is a top plan view thereof.
FIG. 3 is a left side elevational view thereof.
FIG. 4 is a bottom view thereof.
FIG. 5 is a right side elevational view thereof.
FIG. 6 is a front side elevational view thereof.
FIG. 7 is a back side elevational view thereof; and,
FIG. 8 is a front top left perspective view showing an abrasive sheet retained on the sanding board by the slot and clamp, wherein the abrasive sheet is environmental structure for illustrative purposes only and forms no part of the claimed design, and wherein the partial benchtop shown in broken line is environmental structure for illustrative purposes only and forms no part of the claimed design.