Tim Williams wrote:
....
Don't forget to keep a jar of baking soda solution on hand, too! ...

Not necessary and can be a problem. A hot water rinse will remove all
the acid and heat the steel for good drying. Baking soda, aka sodium
bicarbonate (NaHCO3) reacts with muriatic acid (HCl) to form, among
other things, NaCl. I.e., table salt. Having a residue of table salt
in any pits in your steel is not a good idea. BTDT

Bob