How do I get rust off an antique metal rolling tea cart?

i just refinished an old rusty cast iron garden statue. I used a 220 grit sanding sponge to remove the loose/rough rust and then spray painted it with Rusoleum spray paint. It comes in a lot of colors. They also have it in cans if you want to paint it on. I use Rusoleum on everything. I have an old rusty milk can i will be redoing soon. If i can figure out how to post pictures here i will.

Lay your item ( you’ll probably have to take it apart) in a flat area, probably your bath tub. Put the plug in your bathtub and cover the item with white vinegar. Yup, it sounds crazy. But if your skeptical just start with a smaller rusty item in a plastic container. After you have the rust off, make sure to rinse and dry it. There will still be some texture to your rusty pieces, so take a bit of sand paper ( grit depending on how rough the extreme is on it, the higher the number the finer the grit). Once it’s to the point you want it, use something like Rust-Oleum paint on it.

Use alum foil and coke,paint rust spots follow by using foil ball to scape away

I just finished a cart with plain apple cider vinegar and elbowgrease. I used a cloth to soak the area and then used steelwool to help the process along. Only need the steelwool on the rust and some warm water and soft cloth on the rest of the cart.