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The double needle machine is preferable for binding tape repair, although with experience a rigger can install TY-3 tape with a single needle machine making two passes. When using this method, a tape folder must be used, and the inner stitch must be done first. 

Advancing to master rigger requires additional specialized machines, such as a medium-duty, single needle, and compound feed machine, like a Consew 226R or a Juki LU- 563. [Figure 6-62]  The Consew 206RB is also a good choice for those on a budget. This type of machine is used for doing container repairs and light harness work. [Figure 6-63]  The next machine should be a heavy-duty harness machine, such as a Singer 7-33, 7-34, or Consew 733R. [Figure 6-64]  These machines specialize in sewing 5-cord nylon or heavier thread used in the manufacture and repair of parachute harnesses. 

Lastly, a bar tack machine, such as a Pfaff 3334 or Singer 69 class, allows fast, strong, professional repairs and is invaluable in line replacement and manufacturing. [Figure 6-65]  This selection of machines provides the rigger with the ability to undertake virtually any repair or modification needed on today’s parachutes. Remember, all 

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sewing machine manufacturers build models that fit within the various duty types. Those models mentioned are only representative for that category. [Figure 6-66] 

## Identification and Nomenclature 

The purpose of the following information is not to make you an accomplished sewing machine expert and repairman. You should learn the basics about what makes your sewing machines work and how to perform routine maintenance 

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