Originally Posted by jgoeden
As you probably know, they are advising you use this: https://www.micro-tools.com/store/it...temCode=LR-KIT
but anything that is fairly grippy and firm should be able to spin it off.
A firm rubber sink stopper of the right size might work as long as it doesn't touch/abrade the lens surface. Might try making it a bit more "grippy" by wiping it down with alcohol and drying it off just before you try to unscrew the ring.
Have a look at the threads on the inside of the barrel and make sure they are not gunked-up. If they are, you might be able to squirt a few drops of alcohol in there to try to free it up.
Worth a try...