Advice needed for stuck lens retaining ring, please

[nolindan]

I use 'anti-seize' on things that are likely to seize - inventive of me, isn't it. The product is made from finely powdered metal and high temperature grease. Works especially well on aluminum-on-aluminum threads.

There are many grades - differing by heat rating.

I use it whenever assembling mechanisms that may benefit, even though they have never seized in the past, it's insurance.

Available from Amazon.

[Drew Bedo]

You could always use a Dremmel or similar hand held grinder and cut into the retaining ring until you can snap it off but will obviously need a new one if you do.

And I was going to make an unhelpful smart remark about a hacksaw.