This method is not very ecological but it is particularly effective: remove the rust stain with a cloth soaked in hydrochloric acid. You can also try with ether or even methylated spirits (be careful to your hands and eyes because these solutions are quite corrosive).
3 – AGAINST RUST ON GLASS
Choose an oven cleaner to remove traces of rust from a window; just follow the product instructions.
4 – AGAINST RUST ON TOOLS
To remove rust stains from small tools, simply soak them in a bucket filled with vinegar overnight. The next day, you can clean them with a detergent.
For larger tools, start by rubbing away rust with medium-grit sandpaper. Then, fill a 1.5 liter bucket with coke and soak the tools in it overnight. The rust will be gone the next morning. Vinegar is also an ecological, economical and very effective option.
