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Blocks will be physically divided into these groups after use, based on how small they were cribbed for the last job run. In the example above, we have 5 groups of blocks; the first group will contain blocks that are up to 55mm in size; the second group up to 60mm in size, etc. :
The first group has blocks up to 55mm large, can be used for any job requiring up to a 55mm crib
The second group has blocks bigger than group 1, up to 57mm; the third group up to 65mm, the fourth up to 70mm, and the last group is made up of full-size blocks (75mm).
Generally speaking, the lab will want to select the largest possible block (to provide maxiimum support for the blank), that is no larger than necessary. Rx-Universe will select blocks from the appropriate "group" based on the crib required for the job. In the example above, for example, a job which has a crib value of 62 would select a block from the "65" group.
Selecting ART or Nucleo blocking system-side, by material, by lens style, by order
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The blocking method can also be specified for specific materials or specific lens styles. This might be used when only a particular material(s) or style(s) are to be blocked with this method:
Nucleo or ART blocking can also be specified for a particular order:
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