Best is your preference, but if you are a novice, they have dual action polishers that are safe for you and I to use when we lack the pros touch. Meguiars has a popular product, but it's not the only one. Either way, after doing it by hand for years, a polisher is the way to go. Good luck!
You need to purchase a dual-action polisher no matter what brand you buy. I use the Meguiar's Dual Action 6" Polisher G110v2 and love it. http://www.autogeek.net/meguiars-dual-action-polisher-g110.html
If it is used at home, I recommend VIDO's locomotive polishing machine. VIDO's car polishing machine is of high quality and is the choice of most people. Buy a car polisher and look for VIDO.
Yes, buffers are safe to use with todays paints. Be advised, that with any buffer you can damage the car if it is not clean, dry, and free from any debris. A good polisher to buy is the Ultimate Detailing Machine XP by Porter Cable Car Polisher.
Concrete polisher are mainly used to give concrete a great and expensive high-gloss finish. After treated with a concrete polisher the surface looks smooth and slick and shiny. Concrete polisher can be found for example in home-improvement center.
Use a rubbing compound. This requires a lot of elbow grease or an orbital polisher.
Well hate to go for the obvious but a Floor polisher is a 60 pound upright rotary floor buffer that is designed to shine up VCT & Linoleum flooring with a waxy compound and a buffing pad.
All you have to do is use silver polisher probabley soap and water .
If the scratch is not that deep it should be possible to either use a polisher to get rid of the scratch - or to buy a touch-up pen with the correct color to fix the scratch.
Simply Just water with soap and sometimes polisher.
The best place to start for car cleaning products is microfiber. From scrubbing sponges to suede glass cloths to polishing mitts, many of the best vehicle cleaning and auto detailing tools are made from microfiber material. Water is key to cleaning, and can often be used as the sole cleanser when microfiber is employed. The brand of soap, car cleaner or polisher you use on your car is not as important as the cloths and scrubbing equipment you choose -- virtually anything will work well with a microfiber material.
You can use a dremal with polishing compound or fine steel wool.
depending on the type you use. most of them are okay. for example the ones that use natural ingredients in them.
Depends on the car.
Well hate to go for the obvious but a Floor polisher is a 60 pound upright rotary floor buffer that is designed to shine up VCT & Linoleum flooring with a waxy compound and a buffing pad.