Sailrite Portable Upholstery Machines: This well built, all metal, straight & zigzag sewing machine features a powered walking foot for the ultimate in feeding ability. On most sewing machines the presser foot simply holds the fabric down and all movement is accomplished with a single, bottom feed dog. The UltrafeedTM LSZ-1 uses a mechanical Walking presser foot that moves forward and back in time with the feed dog to ensure that the layers of fabric are consistently moving together through the machine. This walking foot is unusually wide (19mm). This is important in that it creates a larger, more positive contact between the walking foot, the feed dog and the fabric itself. Feed heavy, slippery, sticky fabrics with ease. Walk over thick hems, make the transition from thick to thin without skipping stitches. Produce consistent stitch lengths. A variable stitch length mechanism allows for very long straight stitchesup to 6mm. This reduces needle pucker for professional quality upholstery and canvas work. Zigzag stitches can be made up to 5mm wide and can be spaced tightly enough to bind edges (on a carpet for example). In straight stitch mode a needle positioning lever allows for movement of the needle left, right and center (most zippers and boltropes can be installed without changing the presser foot). A welting tunnel in the presser foot simplifies and makes piping installation more accurate. And, because the machine feeds so well, back stitching for long distances is possible with the lever activated reverse. Excellent power is provided by a 110 AC motor that develops 6600 rpm at 1.5 amps. A cogged belt and pulley jack drive system slows the machine, increases its power and eliminates belt slippage. A carbon pile foot control provides for variable speed operation. For even more power consider adding the optional Monster II Balance Wheel Part #604U. At 44 lbs. the Ultrafeed LSZ-1 has the bulk to stay put when handling heavy fabric assemblies. And, because the w