Luneau Technology Briot perception2 - Limits Related to the Thickness of the Lens

Using your Edger...Usual procedure
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LTO
3.2.5.3 LIMITS RELATED TO THE THICKNESS OF THE LENS
The position of the hole and the strength of the lens to be drilled effect the drilling depth. These two parameters
can cause non-through holes which must then be finished manually.
 Thick lenses ( = thickness in the direction of drilling > 8 mm )
For lenses of high thickness and for high drilling radii (distance from centre of block to centre of hole),
it is possible that the maximum drilling length in the drilling direction may be exceeded.
This results in a non-through hole.
Caution!
Non-through hole for lens
thickness > 8 mm
The quality of the final job (accuracy of gaps, axis, diameter and angle of drilling)
depends on the performance and the quality of all the elements in the chain:
 the quality of the frame used and its presentation lens;
 the use of new Briot blocks and adhesive patches;
 correct data entry and adjustment of centering, blocking, edging and drilling of
the lenses.
THE MANUFACTURER DOES NOT GUARANTEE THE PERFORMANCE OF YOUR EDGER IF THESE BASIC 
RULES ARE NOT OBSERVED.