I've used the former with some success. I made a couple of wooden
blocks with carefully cut 'half-pipe' slots in common ring sizes.
Placing the front filter ring securely in them and then using a wood
punch will take out a dent. The 'punch' should be a hardwood slip
about 3/4" x 1/4" with the nose cut to match the true shape.
There is a considerable discrepancy between the hardness of nose
rings on different lenses, but the Zuiks are reasonably malleable, as
I remember. You still need to tap that punch quite hard to take it
out, working along the dent. The result will not be perfect as there
may be paint/anodising damage, metal cracking or stretching but will
take a filter without binding or roughness if you get it right.
Try and practice on a junk lens first. I've managed to take three
separate dents out of one lens in a heroic moment. The vice device is
the best but horribly expensive.
AndrewF
Micro-Tools/Curt Fargo lists two possibilities:
A wooden block with semicircular cutouts of varying sizes, with a shaped
wooden stake to push out the dent.
A vice with outward facing convex jaws to "screw" out the dent.
The second seems to me to be more likely to work - but I can't speak from
experience - though it isn't cheap.
The first might be the model for a home-brew solution?
Piers
-----Original Message-----
From: owner-olympus@xxxxxxxxxxxxxxx [mailto:owner-olympus@xxxxxxxxxxxxxxx]
On Behalf Of Moose
Sent: 06 January 2004 09:13
To: olympus@xxxxxxxxxxxxxxx
Subject: Re: [OM] 100 vs. 100
--snip
My 28/2 has a dented filter ring too. I didn't do it, it was one of only a
couple of bad 'Bay transactions I've had. What is the wisdom of the list
about the best way to undent a filter ring??
Moose
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