Easy mounting CPL

[Sila]

1 neodymium magnet (I was only the big size)
2 ring from keys
3 superglue
4 CPL30.5мм filter
It is possible to paste some magnets, then "hook" it isn't necessary. The filter rotates, the ring keeps in a carving. Everything keeps very strong.

 

[Nigel]

Nice

If the corners of your image are a little dark then you could file (

) a bit off the front of that filter, make it thinner.

 

[BlackBoxed.ca]

This is a very creative and clean solution. Thanks for sharing this!