Granted it was 1939, but the Tin Man in The Wizard of Oz never really looked to me like he could actually work. The Scarecrow could BE a scarecrow if he had to... and the Lion... well, never mind the lion. But what a waste of design potential for that Tin Man! It makes me wonder of the studio artists had ever seen Metropolis a decade earlier.
Ignoring the eyebrow-raising notion that a man of tin can rust himself immobile in mere seconds of precipitation, I decided to make my own! Enter our hero, taking a well-deserved break when he feels (hears?) a raindrop.... reaching up instinctively like we all do... maybe a few drops more... and BAM! The workday ends abruptly.
I threw some little details in here taken from both the book and thin air. Obviously the trees have sleepy faces as in the film, and apples are scattered about for a singing Kansas schoolgirl to find later. I kept the funnel hat and placed a birds nest on his shoulder with some eggs to denote a stillness quality of the scene. The woodcutters wagon advertises a barely legible "Emerald City Lumber Company" logo.
I suppose Warner Brothers thought the origin of the Tin Man too gruesome to talk about in the film - apparently the Witch enchanted the man's axe to slowly chop off his limbs, which he replaced over time with metal appendages. Sounds like a solid Workers Comp case to me.