Originally Posted by
RT
Hopefully, everyone that wrote in and said "You SHOULD be able to grind that to 1.3 or 1.5 mm" pays attention to the fact that this manufacturer recommends 1.7 mm for this particular progressive. As was noted by several posters, the minimum thickness can and does vary from mfr to mfr, and from progressive design to progressive design.
So in this case, there were 2 problems. The original order was for 1.5 mm, which is below the mfr's stated specs. And the lab had a blanket 2.2. mm setting, which was also inappropriate.
I agree that the lens mfr's should probably do a better job, particularly on progressives, of advertising the minimum thickness to prevent the bad feelings between the lab and the ECP.
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