Our last effort to change the existing Al-6061 wire standoffs was at April 2012
We requested sapphire and/or ruby materials with smaller R at the bottom of the groove. Groove polishing was asked for.
Insaco Inc. quote 84740 as " best effort " NO POLISHING. The groove cut to be with eximer laser.
Jeff Lewis as 9-12-2012: the LIGO sapphire prisms grooves were NOT POLISHED but Resonatics used the corner of a rasor blade to scrape off the
ablated material wich was redeposited in and around the grooves.
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