Some of the metal parts after rust removal and polishing, but before priming and painting. I used an electrostatic rust removal process to attack the deepest rust spots, using a 6-volt power supply positive terminal connected to a piece of stainless steel, the negative connected to the part (both by-way of cheap alligator clips and some 16 gauge wire. The process pretty much destroys the clips). I used a plastic tub with a solution of salt (1 tbsp per gallon) and let the whole thing soak overnight connected to the power supply. It basically replaces oxidization with ferrous compounds from the stainless steel ~ think Dorian Gray!)
This is pic where I used this process on an old metal/porcelain caster:
Here are the parts:
