Abstract: The cutting tool has a shaft and spherical cutting head having a groove defined therein extending from a top portion to a bottom portion of the cutting head. A disc-shaped first blade is placed in the groove. The first cutting blade has a peripheral cutting edge following a peripheral surface of the spherical cutting head. The peripheral cutting edge extends beyond the peripheral surface of the cutting head. The cutting tool is rotatable and in operation may be used to cut into a wood piece and create a crate-like cavity.

Abstract: The pneumatic sanding roll has an elongate housing with an outside driving axle separated from an inside portion by a large diameter disc. An air supply channel extends in the housing from the driving axle to a mouth of the inside portion. A spacer is in operative engagement with the driving axle and the disc. A semi-spherical hollow flexible rubber socket has a bottom edge portion and includes an opening. The bottom edge portion is captured between the spacer and the large diameter disc so that an enclosed cavity is defined inside the rubber socket. An abrasive semi-spherical cloth sleeve encloses the rubber socket and is locked to the rubber socket when the rubber socket is filled with air and expanded. A rubber tube is sealingly arranged about the inside portion to cover the mouth of the air supply channel to prevent air in the cavity from leaking back out through the air supply channel.

Abstract: The pneumatic sanding roll has an elongate housing with an outside driving axle separated from an inside portion by a large diameter disc. An air supply channel extends in the housing from the driving axle to a mouth of the inside portion. A spacer is in operative engagement with the driving axle and the disc. A semi-spherical hollow flexible rubber socket has a bottom edge portion and includes an opening. The bottom edge portion is captured between the spacer and the large diameter disc so that an enclosed cavity is defined inside the rubber socket. An abrasive semi-spherical cloth sleeve encloses the rubber socket and is locked to the rubber socket when the rubber socket is filled with air and expanded. A rubber tube is sealingly arranged about the inside portion to cover the mouth of the air supply channel to prevent air in the cavity from leaking back out through the air supply channel.