I just hauled home a SB 10L lathe a few weeks back. It got a 6 hour washing in the rain on the way home. When it started raining i sprayed the entire lathe down with WD40, it was perfect when i got it unloaded and wiped off and the correct oil put on the ways and shiney parts. I also use WD in my welding shop to keep the parts from collecting slag and bb's it also coats the parts with a film until they can be delivered to the powder coaters. Regular anti splatter will rust the parts within hours.
I know about leaving it on lathe parts, i spray my chucks and shiney parts down with it when i am away for weeks at a time and have never had a problem, but i use the liquid WD in the gal and not the spray can stuff. I did one time see a discoloration on a lathe chuck where there was a drip from the WD but it was otherwise perfect, and they are still shiney fter 3 years of sitting. Just my .02 ....Bob
Bob Wright Metal Master Fab
Salem, Ohio Birthplace of the Silver and Deming Drill, all others are copies.