My husband built a table for me. He used a hollow core wood door. He got the biggest they make in order to give me the most cutting surface. Then he bought some wood and made a "skirt" about 3 inches wide, which is set in from the edge of the table. This formed a "box" into which he set the legs. (the legs are anchored to this skirt (box) They were bought at the lumber dept (Home Depot, I think) and since those "legs" are designed for porchs and stairways, he determined how long to cut them in order to give me a counter height table. I am 5"6" and getting old and creaky, so this was a very good solution for me.
There might be some drawings available if you cannot find a similar table plan on the internet.