Howzit F1, Do a test on a rail cutting from a blank. One thing I learned a long time ago was not to keep anything in the shop that doesn't pertain to board building, that way nobody will pick it up and think " um I wonder if this would work" . Kauai is one of the rust Capitals of the world and those anti rust paints don't cut it here. We refer to rust as malignant cancer since it can't be stopped. Aloha, Kokua