Many years ago I was out of work and bought a crappy catamaran with the most of the last of my money. My wife said “That’s a **** boat we won’t be able to have any tea” so I called it “Shi Boa” stir boat no t’s.
If the problem is rusty pivots on pliers the best Quick fix I’ve come across is fresh water. Soak in water and work the grips until free, then keep working in water until the rust starts to bleed out of the pivot, dry then oil.