Schmetz "Specialty" Needles This pack of needles is for our Ultrafeed, Sailrite 111, the Professional and Thompson Mini-Walker sewing machines. "Serv7" Needles — Optimized scarf shape for thick layers of material. Blades reinforced by up to 20%. Helps avoid skipped stitches, reduces needle breakage. In general needle size can be one less than normal. A good needle to use with Tenara/Profilen thread. Sew heavy fabrics, jeans. Needle sizes are listed two ways, e.g., a #22 needle is also a "140" (European description) needle. A #12 is a small needle. A #22 is a very large needle.
Needles 135x17 Serv7 #22 is a railroaded pattern
Reduce Seaming with Railroaded Fabric
Most upholstery fabric is 54 inches wide and, if it features a pattern, the pattern is run down the length of the bolt. When upholstering, it generally looks best to run a patterned fabric from the top to the bottom of the piece and from the back to the front. This requires seams every 54 inches on larger pieces like sofas and long boat cushions. Alternatively, a Railroaded fabric pattern can be used to eliminated unwanted seams. The patterns in Railroaded Sunbrellas run across their widths. This makes Railroaded Sunbrella perfect for these longer projects.
In this illustration, the fabric rolls out to cover the cushions without need for a seam.
This is a photo example of the railroaded fabric coming off the roll.
This is a photo example of fabric that is not railroaded coming off the roll.
In this illustration the fabric rolls out vertically, and for this type of single cushion, would require several seams to cover the couch.
