Just used this for repainting a table. No sanding needed. Use a cloth to rub on, and it takes off gloss and makes a rough surface for paint to adhere to. Worked great. Was easy and fast. Got it at Home Depot for less than $7.
Klean-Strip 1-qt. Easy Liquid Sander-QWN285 - The Home Depot
Remembering this when i paint my new house -- To get rid of paint fumes... add a tablespoon of vanilla extract to a gallon of paint, mix well. It does not effect paint color! And makes the whole room smell like vanilla when you're done! Need this now!!!