The best bet if you can find them are filter wrenches like these
<http://www.bhphotovideo.com/c/product/70726-REG/General_Brand__Filter_Wrench_48_58mm_Set.html>
Alternatively, as Frank recommended, any sort of grippy rubber might
help. Rubber sheets for opening jar lids or to make non-slip or
cushioned surfaces such as rubber shelf liners. Or snap a number of
rubber bands around the ring.
If that fails I'd try a worm gear type stainless steel hose clamp such
as you'd use on an auto radiator hose. But I'd probably put some rubber
bands underneath to serve as a cushion for the ring as these things are
not perfectly round where the screw threads are. Pressure that is not
uniformly applied around the entire circumference risks deforming the
ring which will make the removal task that much more difficult as well
as making it difficult to use the T10's threads afterwards
If all else fails you can try cutting it off.
Chuck Norcutt
Frank van Lindert wrote:
> If it won't come off of course you could also simply keep it attached
> and buy a 52->58 step-up instead of the 52->55 you would otherwise
> have needed... (if indeed the outer rim diameter at present is 58.
> Take it with you to the shop!).
>
> Frank.
>
> Sat, 03 Jan 2009 14:21:58 +0100, Frank van Lindert
> <Frank@xxxxxxxxxxxxx> wrote:
>
>> Good!
>>
>> For unscrewing use a few square inches of tyre tube (or an old
>> punctured inner football) to get a good grip. You could also buy a
>> special silicone grip (made for the disabled) to unscrew lids of jars.
>>
>> Frank.
>>
>> Sat, 3 Jan 2009 04:59:31 -0800, "Darin" <d.rhein@xxxxxxxxxxx> wrote:
>>
>>> Frank, I think you've solved the puzzle! I hadn't thought of that, but now
>>> that I look at it a little closer, it appears to have a ring stuck on it.
>>> Now to figure out how to get the stuck ring off! :^)
>>>
>>> Thanks,
>>> Darin
>>>
>>> Frank van Lindert wrote:
>>>> Are you sure your flash hasn't a ring attached already? It
>>>> should be a step-down ring, and they can be easily overlooked....
>>>>
>>>> Frank van Lindert
>>>> Utrecht NL.
>>>>
--
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