Re: What's the quickest way to get the rust off my trailer?
Prepping rust for paint is most easily done with a chemical rust tranformer. 'Rust Transformer' is one brand, I think it's made by 3M or carries the Rustoleum brand. These liquids, that are sprayed or brushed on chemically react with rust, hardening and neutralizing it, turning to a shiny black well bonded metal. It can then be sanded (not necessary) and primed or painted. Even if you decide to sand or blast first, pros always neutralize bare metal before painting, with a chemical agent or neutralizer, first. For speed and great rust prep use a chemical transformer (not rust looseners, or other similar stuff). Dries in about 30 minutes, non-chemically reacted liquid remains white, reacted liquid turns black, an indicator enough material was used to neutralize all the rust.