Have a Hoya 77mm CP - and yesterday, it has come off as 2 seperate pieces. One that is without the glass and has the groove that attaches to the lens and the other that has the glass!!
There is also a thin strip of metal that looks like a lining that seems to be removable - this was inside the groove of the first ring, and potentially something that should help hold these two pieces together....
Is this something that can be fixed or is it time for another CP??
The cost advantage of saving a few dollars over that of buying a B+W up front is pretty much negated when you need to buy a replacement polarizer.
