Hi I am new to this all. I have been given a rocking chair that is in very good condition. Nothing is broken or cracked. But It seems someone may have planed some of the bottom of the rung (on one side only) so it wouldn't rock. It looks like a hollow area in the center of the rung. I would like to know how to fix this. I was thinking maybe put wood filler on the area to build it back up to the same level as the other rung??? I am totally new to repairing anything to do with chairs.
Can you post a picture of the chair/runner? Sounds like a thin strip of hardwood (1/8" or less...might be sufficient) which will bend on that curve, can be glued to the bottom edge and clamped. Then a block sander can be used by hand to shape the addition to form it to the existing runner.