i am making or wanting to make a oval top for an end table i am working on,,the table is 24x15so i cut the boards about 18x30 thinking it would give me a little room to play,,,and i watched some you tube videos and i did get the oval made but each side cuts in too soon,, leaving part of each corner knocked off,,,,i guess what i am trying to say is the oval needs to start somewhere past the sides,,if that makes any sense,,lol,,,,this is my first oval and any help would be appreciated