Gold-tinted dog dishes

[TylerW]

Hey guys:

I have a set of Plymouth dog dishes that I suspected of having a coat of paint on them. They did. After I stripped the paint off today, I noticed that they have gold anodizing on them, front and rear. There are spots of wear and the metal underneath is brighter.

So, what would these be found on and why the gold anodizing? And yes, it's anodizing, NOT paint.

Here's a pic with one of my regular caps for comparison.

 

[bigblockbird]

self-etching primer ? used a yellow/greenish self etcher in a production paint shop years ago.

 

[TrailBeast]

Cigarette smoke?

 

[69_340_GTS]

Looks like someone stripped them right down to the bare metal, then dipped them in Alodine (conversion coating). Alodine turns the aluminum yellow/tan and is an excellent "primer" for aluminum to be painted. And since they were painted, that does makes sense. Only way I know of to get it off is sanding, polishing, or blasting. A very strong caustic solution might also take it off, but I doubt you want to mess with that kind of stuff.

 

[TylerW]

Looks like someone stripped them right down to the bare metal, then dipped them in Alodine (conversion coating). Alodine turns the aluminum yellow/tan and is an excellent "primer" for aluminum to be painted. And since they were painted, that does makes sense. Only way I know of to get it off is sanding, polishing, or blasting. A very strong caustic solution might also take it off, but I doubt you want to mess with that kind of stuff.

That makes much sense, thanks!

 

[340wedge]

I seem to recall two versions were made, stainless steel and aluminum. I think those would be the aluminum.