Blocking Segmented Lenses

A short video showing how to block bifocal lenses.

[@shahin-177]

Great refresher for my boards since my job doesn’t sell bi-focals!!

[@naB4o]

This is blocking for a passive mode. Its even easier if you use bifocal mode on your edger. In that mode you just need to fix the bifocal on the red marker, and use BF mode (e.g. LE9000).