I’ve used a liquid product called “EVAPO-RUST Super-Safe Rust Remover” to clean rust off of rusty tools and other items. You just let the parts soak in this stuff for a while and then just wash it off. Works great! If the rust is severe, it may take a 2nd soaking.
RV-12 N864RV 90 hrs TT
Donation Made for 2017