    
Glenn middleton
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Votes: 0 (Vote!) | | Posted on Friday, December 09, 2005 - 08:33 pm: | 
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Chrome plating is 'porous' and that is why good quality chrome on steel is always applied over a nickel or nickel and copper base plating. In cameras the chrome is just applied to the brass pressing and the green spots are the corrosion products (copper salts) from the brass pressing. I remove these with a Formic Acid based kettle descaler - just dampen a Q-tip and rub gently. After drying I apply a little microwax polish and then polish off. The wax seals the plating and the protection lasts quite a time. Have used this method on a number of FED and Zorki 1s.
There is a cleaning product on sale here in the UK called 'Cillit Bang', it is a limescale remover basically but will clean metal up remarkably well. This product is now my choice for cleaning up corroded parts as it contains a detergent that degreases the part also.
The problem of corrosion is also dependant on the person or persons handling the equipment. Some people have only to pick up a piece of polished steel and it will show rusty finger marks within 12 hours, whilst others can handle the steel all day without problems. So keep the camera wiped over on a regular basis. |
