Technical article on mounting the harness and warp beams for weaving double (face-to-face) velvet, with emphasis on the warp let-off and cloth take-up motions. It compares a semi-positive ratchet and worm-gear let-off (Fig. 1) with a spring-and-lever rope-friction let-off (Fig. 2), tracing the ground warp and pile warp paths through rollers, lease rods, stop motion and harness. It also discusses how filling diameter and humidity affect tension, and the handling of rayon pile ends and crepe ground warp in chiffon velvet.