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Pete Ganzel | all galleries >> Tinkering >> DIY Straightening Bent Lens Filter Rings > Straightening.jpg
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Using a mallet, strike the tool directed along the edge of the bent portion.
Start with small hits until you develop a sense of how much force is necessary.
The idea is to just stretch the metal back into position, a little at
a time using the curved base tool as a mandrel.
Severely bent rings will have too much metal deformation for a perfect repair
but you should at least be able to get back to where a filter can be installed.
You may need to bend back a little oversize to account for thread distortion.

Minolta DiMAGE 7
1/90s f/9.5 at 38.3mm iso100 with Flash full exif

other sizes: small medium original auto
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