Paint stripper, gloves, and a brush. Check with paint stores for stripper, and for the RIGHT gloves.
You can paint about anything. Depending on the temperature the iron is getting will say what type of paint you need. (there is special paint for engines) if the iron is going to get extremely hot, you might not find a sutable paint.
A cast iron tub is about 325lbs. steel is about 75lbs. Tap on tub if it sounds solid it is cast iron.
You don't, you remove the plastic junk and replace the toxic plasatic with cast iron
Rust on cast iron is not dangerous to consume, but it can affect the taste of food and the integrity of the cookware. It is best to remove rust from cast iron to maintain its quality and performance.
Polished epoxy
Scrub it with Goof Off.
You can remove mineral deposits from your teapot with a mild vinegar solution.
No, it is not sanitary to not use soap on cast iron when cleaning it. Soap helps to remove bacteria and food residue that can contaminate the cookware.
when we apply paint on iron articles moist air cannot attack iron and prevent rusting
A good way is to head over to chowhound.com. They have a lot of questions and answers on how to remove oil residue from a cast iron skillet. An example is to boil some water and leave it in your skillet then wash off.
Physical, no chemical reaction is occuring, your just covering the Iron with paint, the paint doesn't react with the iron.
To make cast iron cookware using traditional methods, first melt iron in a furnace. Pour the molten iron into molds to create the desired shape. Allow the cast iron to cool and solidify. Remove the cookware from the molds and season it by coating it with oil and heating it to create a non-stick surface.