| Joined: | Fri Feb 8th, 2019 |
| Location: | Leigh On Sea, Essex , United Kingdom |
| Posts: | 1422 |
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was told that there was an aluminium strip 'in there' that can oxidise and needed regular use to wear it off
Aluminium forms a thin oxide layer immediately it is exposed to oxygen - so all regular aluminium surfaces are "oxidised".
I would have thought the issue is more likely to be galvanic corrosion due to the use of other metals in contact with the aluminium or just a poor choice of material in the first place.
If indeed, that is the source of the noise - lenses aren't THAT difficult to disassemble, I'd be tempted to take it apart and clean / lubricate.
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If it is broken it was probably me ....