buttonholer การใช้

• He uses a homemade buttonholer to fasten his shirt.
• The buttonholer's adaptor attaches to the machine's presser bar, replacing the presser foot.
• Produced for Singer from 1948 into the late 1980s, the Greist template design of buttonholers became Singer's longest running style of buttonholer.
• In its place the buttonholer employs a cloth clamp with teeth on the underside to hold the material firmly whilst manipulating the cloth side to side and forwards and backwards.
• Later buttonholer models made for Singer by'Greist Mfg . Co .'employed templates to create a variety of different buttonhole sizes and shapes including keyhole buttonholes, as well as straight buttonholes, and even an eyelet.
• Greist Mfg Co . produced a buttonholer adapted to fit White Sewing Machine Company models, and which is internally identical to ones it produced as the Singer 160506 and 160743, or later 489500 and 489510 template-driven buttonholers.
• Buttonholers usually include a metal feed cover plate to cover the machine's feed dogs, so that they do not interfere with that of the buttonholer, though some machines allow the feed dogs to be disengaged or  dropped.
• A buttonholer attachment can create buttonholes from any sewing machine capable of making a lock stitch . ( That is not to say, however, that some " industrial buttonhole machines " cannot employ a chain stitch, especially to create the " purl " when making " keyhole buttonholes " ).
• Greist often included a " bonus " in the form of a plastic pouch containing a set of the four additional templates  " usually in grey plastic "  not normally included with the buttonholer, viz sizes :-3 / 8 " ( 10mm ) Straight, 1 / 2 " ( 13mm ) Straight, 15 / 16 " ( 24mm ) Straight, and a 5 / 8 " ( 16mm ) Keyhole.
• However, Greist continued to " sell " the Eyelet  made of metal alloy  individually, as well as " selling " templates in a Five-Pack of metal alloy inclusive of the eyelet; and in later years sold an Eight-Pack of templates  that included an Eyelet template  but " only ever made of a black plastic fibre composite ", or included them with the purchase of a Greist Buttonholer.