We live in a house that was built in 1959. I have no idea when the kitchen was redone, if ever. My lower doors in my kitchen are warped. Even against the magnet there are gaps. I am disabled on a fixed income. My wife and I have stripped off the paint, and lightly sanded. Is there any way to fix the warpage? New doors are out of the question, due to finances. This may sound stupid, but could I dampen the wood, and then put weighted objects on the high corners. The wood itself looks very good, just warped. Any help is appreciated.
Thank you.

 

Let's make sure they are actually warped. It is a possiblity the hinges are out of whack. Of course if you have external hinges, and the top and bottom don't meet the jamb, then, yes, you have warped doors. What you suggest is viable, but don't just try to flatten them. You will have to slightly overextend them to allow them to spring back to the original shape. Once you take the doors off, lay them on a really heavy flat surface to test for warpage. If they are warped, place a dowel at an angle across the door and weight down the two offending corners. Spraying them lightly with water may help, just don't douse them, as the glue may give way.
Before you do all this, check the cabinets themselves to make sure they are square and plumb. If the cabinet sags, then correcting the sag may also correct the door problem.
Post back if we can help further.