Removing years of bad paint decisions from hinges and door knobs. Easy as water, heat, and baking soda. I actually did this in my old bungalow. Really very easy, butr emember, metal gets hot people.... I may or may not have burned myself.
Removing Oil, Paint and Other Concrete Stains Remove oil and grease stains from concrete using TSP and other cleaners http://www.familyhandyman.com/garage/removing-oil-paint-and-other-concrete-stains/view-all