Sounds like Joe's solution will probably work, but if you had to, a machine shop could probably polish it out. I got a 440 steel crank from a friend recently that had been setting in his shed unprotected. I wasn't sure it would work, but the machine shop acid washed it and it turned .020 / .020. Looks great now. Gary > well i did a dum-dum and left my steel 340 crank in the back of my > truck and it sprinkled a little on it. I dont know what I was thinking, > anyway it started a few little dusty orange spots on the machined > surfaces. I scrubbed with a rag and that helped , but theres still a > dark area where the spots were. > what should i do?? > Neal Zimmerman, eugene oregon > >