Two new posts on Rust Back, Rust Bloom, and Flash Rust were added in March, 2014, along with flow charts and new pictures.
How do you know when to paint?
Go to flashrust.org to read the posts.
http://flashrust.org/2014/02/27/1-what-is-flash-rust-rust-back-and-rust-bloom/
http://flashrust.org/2014/03/06/defining-rust-back-flash-rust-and-rust-bloom/