This has surely been asked before, but I'm not finding it.
I'm building an RV-7A and have the firewall all final drilled and deburred, and the stiffeners, etc. primed/painted. The stainless steel firewall itself is neither primed nor painted. However, it was obviously wiped down with oil before I received it from Van's, presumably to help protect it from moisture.
It had collected dust over the years and I've cleaned off the "factory oil." I've decided not to prime the stainless steel firewall parts and that seems to be the consensus with most other builders too.
My question is: should I wipe it down with oil (or something oil-like) again? And if so, is there a recommended type? Should I apply it before riveting the stiffeners? (That would put oil against primer, so I'm not sure about that.)
Thanks in advance.
I'm building an RV-7A and have the firewall all final drilled and deburred, and the stiffeners, etc. primed/painted. The stainless steel firewall itself is neither primed nor painted. However, it was obviously wiped down with oil before I received it from Van's, presumably to help protect it from moisture.
It had collected dust over the years and I've cleaned off the "factory oil." I've decided not to prime the stainless steel firewall parts and that seems to be the consensus with most other builders too.
My question is: should I wipe it down with oil (or something oil-like) again? And if so, is there a recommended type? Should I apply it before riveting the stiffeners? (That would put oil against primer, so I'm not sure about that.)
Thanks in advance.