The polishing option is not available for high-base jobs. However, the high-base wheel has been
designed to provide an equivalent finish on polycarbonate lenses.
10. CHAMFERING
The chamfer, also called counter-bevel, removes the sharp edge of the lens.
• Standard value of a small chamfer: 0.20 mm
• Standard value of a large chamfer: 0.40 mm
Before you select a type of chamfer, make sure it is compatible with the lens characteristics:
• Lens material
LENS MATERIAL AVAILABLE OPTIONS
The quality of the chamfer depends on the spraying. Make sure there is a
constant flow of water until the end of the chamfering operation.
Not available
• Thickness at the edge of the lens
LENS THICKNESS AVAILABLE OPTIONS
> 1.2 mm
between 1 and 1. 2 mm
< 1 mm
• Distance between the edge of the groove and the edge of the lens
DISTANCE AVAILABLE OPTIONS
> 0.8 mm
between 0.5 and 0.8 mm
< 0.5 mm
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