A seaming assembly for placing seams in a continuously moving web of material. The seaming assembly includes a first support that is movable in a machine direction and a second support which is secured to the first support. The second support is movable relative to the first support in a cross direction. A seaming mechanism is mounted on the second support to place seams in the web that are at least partially in the cross direction. The first support may be movable in the machine direction at a speed that is substantially the same as the web such that the seaming mechanism places seams in the web that are substantially in the cross direction.