How to fix filter?

Orio · Expire: 2012-12-04

I jave a Jupiter-250 filter glass that has lost the metal ring that was keeping it together with the filter's main metal "body".
It's a yellow filter and therefore very useful for B&W photography.
Huge size (82 cm diameter).
How would you fix it to the filter body?
I was thinking of silicon - but will it keep it together? And, will it ruin image quality? Although at the edge, it may be in the FOV.

LucisPictor · Expire: 2013-12-03

Tricky!
Perhaps you can screw the filter to the lens you want to use it at and then use some superglue at the highest and lowest point of the glass, then chances are lower that it is in the FOV.

bob955i · Joined: 15 Apr 2007 Posts: 2495

You could try making another spring clip for it by using the correct gauge of piano wire (AKA music wire). Use a bottle/jar with a diameter that is slightly larger than the filter diameter as a mandrel and wrap the wire around the bottle/jar.

Place the new spring clip on the filter ring and squeeze it together until it fits inside the filter ring up to where the wire ends overlap.

Cut the ends off and trim them back if necessary until the new clip fits completely inside the filter ring.

Sorted.

You can get piano wire from aeromodelling shops - just make sure you get the right gauge that fits the machined groove in the filter ring.