All, Our Vendor made a steel structure that has bare mild steel as the outer surface, only using oil as the only mean of anti-rust protection. and it is used to support a cam follower rolling against it. it's rusting all over currently. it is a 10ft tall structure (5-6ft of rolling length). Need a way to protect the steel. So I guess a hard surface like Chrome would be good, but we can't dissemble it now and have to do it insitu. Would zinc paint be my best bet currently to slow down the rusting on the guide rail (along with daily oiling)? I know zinc is soft and it may not stand against the cam follower, but at least it has galvanic protection. What are you guys thought on it, if dissembly is highly undesirable as it takes days to fully dissemble it. Tolerance is not an issue as we do have about 1mm gap that can easily accommodate any coating. I'm getting frustrated with our vendor who doesn't think before they design.