I'm restoring a Speed Graphic that was my father-in-law's Overall it's not in too bad shape... some oxidation, leather in need of reconditioning, mechanisms needing lubrication, etc.
On removing the rear shutter curtain, I found that the top "rail", a thin piece of black steel bent round to provide a smooth surface for the curtain to ride over, had some oxidation and roughness. I was able to buff it off with a Dremel brush and polish it smooth with felt wheel and polishing compound.
However, what became apparent once I'd finished is that there is a spot of shiny metal where the black finish was marred. I assume that was the origin of the rust though that covered a much larger area.
Anyway, barring any suggestions on what the finish is (baked lacquer?) and how to repair it, what I am trying to decide is what I could use to cover it and limit the possibility that it would rust again.
I'm concerned that something like a clear varnish wouldn't provide a smooth and solid enough surface for the shutter curtain.
Suggestions?
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