Painting wood furniture has to be one of the best ways to transform it on a dime (hello, flea market finds!), but sanding it first can be a real pain. Maybe it's a big, awkward platform bed or table and your arm is already tired just thinking about firing up the handheld sander. Or maybe you don't have a sander—and don't want to buy one. Or maybe the piece you're painting is far too intricate to sand: a bentwood chair? A mirror with detailed carving in the frame? A slatted bench? Step away from the sandpaper, because there are actually a few reliable ways to paint wooden furniture without sanding it first at all. As with any paint job, clean the surface well before beginning (and if you're not sure which method to use, test a few in small patches before committing to the whole job).

If you have a very specific paint in mind…

Prep with a Bonding Primer

So you really, really want to coat that little pine side table in Farrow & Ball but aren't sure if it will stick to the lacquer? Look for a high-quality bonding primer to paint over the piece as a base coat—they're designed specifically to get paints to adhere to a range of surfaces. And as a bonus, it will also help you prep metal, vinyl, glass, and other surfaces for painting in the future if you don't get through the whole gallon. And it dries within an hour.

Adhesion Bonding Primer by Kilz, $40, amazon.com; shop now.

If your object has intricate woodwork…

Prep with a Liquid Sander

Also marketed as a "deglosser" or "sander/deglosser," liquid sandpaper is a chemical solution that helps to dull the paint or varnish you want to paint over so that the new topcoat will actually stick. And it's really easy to use: Just soak a rag or sponge and run it over the whole piece—the liquid will creep right down into any intricate crevices. Big disclaimer: Being chemical, it really stinks—so you'll want to use it outside and wear gloves and protective googles (or maybe don't use it to all if those kinds of fumes really get to you).