i sell balancing equipment, equipment for balancing of rotors in their own bearings. my husband and i were having problems with our backs. here are some pictures we received of this marvelous work. but this is anything but your everyday retail role. second job turn on taps and open the dump valve. please stay parked in upper lot or dirt lot by baseball field. but not a regular bas relief, a reverse bas relief - since you are carving from one side of the glass and viewing the finished carving from the opposite (smooth) side! 