Yep good old White Vinegar and besides being the cheapest rust removal product it is also environmentally safe too being vinegar and not chemicals!

I use a tall vase for the legs and a black tub for the door and parts! I also use the vinegar to make my electrolite mix for zinc plating.

When finished just strain and pour over your hot chips! LOL

Just about to do some legs, here are the pics before hand.. With the tall vase I need to soak half then flip them over but get two at a time.
A better idea would be the correct size PVC conduit capped at one end, I will eventually make one of these but in the meantime this works.

Cheers: Brettski... :)