Lens bumped, bent threads- HELP!

Richard Wasserman · Jan 30, 2007

I just bought a 65mm Grandagon that was hit on the rim and the filter threads are now dented just enough that a filter will not screw on. Is this a DIY repair? Any ideas on how to do this are certainly welcome. About all I can think of is to tap the dent out with a small hammer, but that can't be too good for the lens. Or should I send it out for repair-I assume to SK Grimes? Thanks

Richard Wasserman

BradS · Jan 30, 2007

There's no way I'd attempt this myself. Action, reaction...equal and opposite forces and all of that. What I'm trying to say is that the force required to remove the dent will be at least as large as the force that created the dent in the first place...If not applied expertly, I imagine that instead of fixing the problem, you might well make it worse. Possibly much worse.

I'd send it to Pro Camera Service in Thousand Oaks, California and be patient.

Sirius Glass · Jan 30, 2007

Send it out for repair!

Have it repaired!

It cost $17 for me to fix the same thing at Bel-Air Camera in Westwood California.

It is not worth the risk to fix it yourself.

Steve

resummerfield · Jan 30, 2007

I have one of those filter ring expanding vises from Micro-Tools. If the filter ring is just slightly bent, this little vise can straighten it. However, the 65mm Grandagon is a very nice lens, and I wouldn't take a chance on further damage by home repair. Send it to a very good shop--they will do a much better job.

Roger Hicks · Jan 31, 2007

disfromage said:
I just bought a 65mm Grandagon that was hit on the rim and the filter threads are now dented just enough that a filter will not screw on. Is this a DIY repair? Any ideas on how to do this are certainly welcome. About all I can think of is to tap the dent out with a small hammer, but that can't be too good for the lens. Or should I send it out for repair-I assume to SK Grimes? Thanks

Richard Wasserman

Dear Richard,

A small 'ding' like this is easily and safely remedied with the 'reverse vice' specificaly designed for this purpose. I've done it. They're under about $20 from a specialist such as Micro Tools, and you'll have the tool if you ever need it again.

For big dings, yes, send it out.

Cheers,

R.

epatsellis · Feb 6, 2007

if you're in a rush, and can't wait for ups/usps, if you make a piece of wood with a concave section, the same diameter as the outside of the lens, and a wooden tapered stake ( I use either oak or maple) cradle the lens in the wood, a few light taps and you're done, works for me 100% of the time, as long as it's not a really bad ding it should only need a tap or two.

erie

Richard Wasserman · Feb 6, 2007

Thanks Erie, that is a great suggestion. However I took the lens to Precision Camera Works and should have it back tomorrow. The thought of banging on the lens made me nervous.

Richard Wasserman

Sirius Glass · Feb 7, 2007

epatsellis said:
if you're in a rush, and can't wait for ups/usps, if you make a piece of wood with a concave section, the same diameter as the outside of the lens, and a wooden tapered stake ( I use either oak or maple) cradle the lens in the wood, a few light taps and you're done, works for me 100% of the time, as long as it's not a really bad ding it should only need a tap or two.

erie

Do you use a wooden stake through the heart to stop your sleep walking??

Steve

epatsellis · Feb 7, 2007

hmmm, seeing as how I work 6p-6a, and this time of year, I drive to work in near darkness, and drive home in near darkness, it may work.

erie

Lens bumped, bent threads- HELP!

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