IT is an age-old process which grinds away the edge of the glass to produce a chamfered or decorative finish.
Too small for the machine to bevel. For example, clock face, compact mirror, barometer.
Shapes. Machines are great but have their limitations and cannot do some shapes. Beveling gives us the flexibility to cover most shapes.
Decorative finish. Bevels do not have to be straight. There are different types of finishes, such as cross bevel, scallop bevel and rope bevel.