Working area: 28 x 23.5 mm (11 x 9.3 inches)
Includes a 19 mm grinding head.
Electrical connection: 230 volt
Apply a thin coating of grease (e.g. petroleum jelly or anti-seize lubricant) to the motor shaft before fitting the grinder bit. Also, remove the allen screw and insert some grease into the thread to keep it lubricated and easy to adjust. Always secure the allen key to the flat side of the shaft, tightening it to the rounded side will scar the shaft and prevent removal of the bit.
Start with a piece of scrap glass the first time you grind, to get a feel for the machine and the process. The bit should be lowered and set with 3 mm (1/8 inch) of diamond coating showing, this can be raised as each 3 mm (1/8 inch) strip of coating is worn.