Abstract: Apparatus for the manufacture of blinds of the type having a head rail, a plurality of ladder tapes, plurality of blind slats, and raise cords passing through the blind slats, by which the blind slats may be drawn upwardly toward the head rail, and wherein the apparatus has a die support for passage of strip material along an axis therealong for the formation of blind slats, a plurality of die units mounted on the die support, at least some of said die units being moveable therealong, the die units being aligned with one another along the strip path, the die units being operable to procure their selective operation to form openings in the strip material at pre-selected spaced points, a cut off die for cutting off a pre-selected length of the strip material to form a blind slat, and slat threaders located downstream of the dies for threading a slat through the ladder tapes. Also disclosed is threader apparatus which is moveable laterally relative to the axis of the strip material.