Super A Repaint?

CGID

Member
My SA has a some 50 yr old repaint job and I would like to re-repaint it. Friends familiar with old tractors always ask, "When?" More urbane friends regard 50 yrs of sun-bleach, rust and caked grease as "patina". They exclaim, "My God, the patina, you're not going to paint it, are you?"
 
I never heard the word so I looked it up. It is another way of expressing "work clothes" as some don't want old tractors repainted, particularly if the paint is original. I restore tractors as a hobby, including painting, as I don't like looking at rust -- it is what the owner wants to do and no one else's opinion means anything.

Patina (/ˈp©¡tɨnə/ or /pəˈti¢°nə/) is a tarnish that forms on the surface of copper, bronze and similar metals (produced by oxidation or other chemical processes); stone;[1] a sheen on wooden furniture produced by age, wear, and polishing; or any such acquired change of a surface through age and exposure. Patinas can provide a protective layer to materials that would otherwise be damaged by corrosion or weathering. They may also be aesthetically appealing.

On metal, patina is a coating of various chemical compounds such as oxides, carbonates, sulfides, or sulfates formed on the surface during exposure to atmospheric elements (oxygen, rain, acid rain, carbon dioxide, sulfur-bearing compounds). Patina also refers to accumulated changes in surface texture and colour that result from normal use of an object such as a coin or a piece of furniture over time.[2]

Archaeologists study the patinas found on flint tools and ancient stone monuments.[1] Stone develops a corticated layer over time that is due to a range of complex factors. This has led stone tool analysts in recent times to generally prefer the term "cortification" as a better term to describe the process than "patination".[3]
 

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