Naturally Repair Wood With Vinegar and Canola Oil. ~ Use 3/4 cup of oil, add 1/4 cup vinegar. white or apple cider vinegar, mix it in a jar, then rub it into the wood. You don’t need to wipe it off; the wood just soaks it in.
several good ideas on caring for and repairing wood furniture -- Video: How to Patch Veneer with Quickwood Fixing a chipped piece of veneer isnt as hard as you think. Kevin Southwick, an expert at The Family Handyman, will show you how to use Quickwood for veneer repair.
For you folks who buy old furniture then paint it…..you really must try this stuff….only a couple of bucks for a 16 oz. can. You mix it (powder) with water to the consistency that you need for your repair. I made mine a little thicker, stuck a few brads, with heads on them, in to the leg (for grip), then molded the leg. I use it instead of wood putty for smaller jobs. It sands beautifully and lasts forever, as you only mix what you need for each job.