Another Build Thread - My '32

[Bob Parmenter]

Good stuff Jim.
I've used phosphoric acid in similar fashion to what Jim shows for decades. I buy it straight with no dyes or supposed other wonders in it and it does just what Jim has commented on. Stored inside, the treated pieces will stay clean looking for years (not sure I'd commit to indefinitely though). It does have to be handled carefully, and cleaned properly after the activity of the acid has done it's job for proper topcoat adhesion.
I'll post a few pics to give some added info to the thread. I've learned that the appearance changes from application to application, I'm guessing it may have something to do with the alloy content of the steel. The splash shields I'll show turned a nice golden color. Those pieces didn't have any appreciable rust I just gave them the acid wash for preservation purposes. The frame had typical "shop rust", light splotchy surface rust and hand print leftover and cleaned up nicely with brush on and very light scotchbrite rub before washdown. The one detail shot you might see some evidence of light pitting and how it's been converted (dark dot looking stuff).
Like Jim, I bought a gallon years ago and still have a small bit left after doing quite a few frames, bodies, and piles of components. Probably one of the most economical, and effective, products I've ever used playing with cars.