This weekend, I discovered the joys of electric rust removal.
I used a glass baking dish, a battery charger, some plain tap water, washing soda, and an old bit of steel.
The results were really quite amazing.
The rust just disappeared in a flurry of bubbles.
A little bit of brushing and light sanding brought it up all nice and shiny.
A lot easier than rust converter.
$3.85 for 1kg of soda. I probably used 1/50th of it, roughly 7cents.
Davo's Weekend Workshop 