Rust removal with Canon EOS 5D and Rokkor-PF 50 f2
Useful method in progress photographed in low light.
Image above was taken hand held in low light garage with Canon 5D full frame camera. Lens was EOS adapted Minolta Rokkor-PF 50 f2 normal lens. ISO was set to 1600 and image exposure increased 1.5 f-stops in Canon RAW processing software. Quite a bit of color matching was done in Photoshop with Replace color to minimize noise patterns.
The image shows rust removal with electrolysis - literally a bucket of rust. Rusted metal parts are submerged in salted water and two iron pipes used as electrodes. The other pipe (cathode) touches rusted part. Small current from battery charger runs in the water carried by salt ions creating hydrogen. In the process rust and dirt are completely eliminated from the surface of submerged parts and is seen floating in the water along with hydrogen bubbles.
Parts with thick cover of rust and dirt could take time to clean, possibly several days. The process removes rust and dirt only saving all the good iron covered by rust. Already corroded and eroded surface can not be replaced or fixed with this process, only cleaned. After cleaning the parts it will be possible to inspect and evaluate how much metal corrosion has eaten away.
Waste from the process is dirt and rust and does not present major environmental or health hazard. Only little electricity is consumed in rust removal electrolysis because of low ampers. Despite the humble setting thoroughly cleaned parts can be had. Anode and cathode iron tubes may need to change places or polarity reversed for the next electrolysis run to start the reaction on rusted iron surface - the flow is from rusted to clean electrode.
If bubbles begin to form on the other electrode than the rusted part to be cleaned, simply switch electrodes with each other.
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