Choosing a sewing machine has many variables. For someone with no sewing experience or who is mechanically challenged I can not stress enough, the importance of a local sewing machine dealer. The local dealer will offers customers lessons and customer support.
Many people don’t have local dealers, or don’t like the local dealers in their area. […]

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The point of this two-part article is to alert the reader to the (often considerable) merits of twin-screw rotary compressors and to set the record straight on wet screw machines. For both dry screw and wet screw compressors, typical rotor profiles are shown in Fig. 1. These machines represent a sub-set of the machinery group […]

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A paradigm shift in injection molding machinery design began in the 1950s following the invention of the reciprocating screw. Until that time, all injection machines used plunger injection, though some two-stage machines in the middle to late 1950s had non-reciprocating screw preplasticators.
In the U.S., William Willert is generally regarded as the pioneer of the reciprocating […]

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