Part positioning apparatus are disclosed. An example apparatus to hold an object comprises: a first assembly including a first post and a first puck fitted onto the first post, the first puck to hold the object such that the first puck eliminates a roll moment of the object; and a second assembly including a second post and a second puck fitted onto the second post, the second puck to hold the object such that the second puck eliminates yaw movement of the object, at least one of the first assembly or the second assembly being adjustable to change a distance between the first and second pucks.