The Crafts Studio in the Torrance Cultural Arts Center has 2 Vigor
polishing machines. The brand is now owned by Grobet USA. We order
filters for the machine through Nasco. One of our jewelry
instructors wants filters that would filter particals of .5 microns
that would fit our machine. Does such a filter exist? If so, where
and how could I contact the source? Thank you for your help.