hole 85 in the other end 86 of the baseplate 58 a circlip 87 holds the bearing 84 in the hole 85 a second bearing 89 is mounted in the bottom of the baseplate 58 a tubular shaft extension 90 is connected to the grinder spindle 82 and extends downwardly through the bearings 84 and 89 a rubber pad 92 is connected to the bottom end 93 of the extension 90 using a threaded nozzle 95 during grinder operation water from the base 1 is fed through the tube 76 to the polisher head the water enters the spindle 82 and passes downwardly through the extension 90 and the nozzle 95 to the workpiece 2 a polishing disc 96 is mounted on the bottom of the pad 92 using a hook and loop connection not shown of the type employed on off the shelf disc polishers i e velcro7 hooks are provided on the bottom of the pad 92 for mating with loops 97 on the top of the disc 96 or vise versa referring again to fig1 to 3 with the index pin 52 in the hole 53 in the indexing plate 57 the polisher 16 is located in a slightly tilted non.