With open burls or spalted wood, sometimes the only way to finish a bowl interior is by power sanding.
This soft-head flap wheel (also called a finishing mop) has cloth-backed 60x abrasive flaps separated by aluminum oxide rubbing pads. The combination works quickly but smoothly. This wheel can also be used on metal and plastic. The unit is best used in a flex shaft, but can be used in an electric hand drill.
Available in two sizes: 2" in diameter by 1" high (max. 12,000 rpm) and 3 1/8" in diameter by 2" high (max. 7600 rpm). Both have 1/4" shanks.