In this case paint stripper removed old flaky paint caused by years of flexing and we got the outside of the coil spring clean using a wire wheel.
In some of our early restorations we wire brushed and sanded springs as clean as we could. Now we blast them in a media cabinet for a much better job.
Chrome plating coil sprinds or even leaf springs is not a good idea unless the car is a show-only vehicle that is never driven on the road.
Today, we toss the spring in our media blasting cabinet and the aluminum oxide flows everywhere and takes the old paint off all surfaces it hits. After the metal is blasted, it has a gray textured surface to we spray it with Eastwood epoxy primer to make it smooth. We wait for the epoxy to dry fuly. Then, we paint the spring with Eastwood's Best 2K Ceramic Chassis Black. Before replacing the spring in the car, we check it over and then do the install using new rubber seats (if available) and all new or reconditioned hardware.