Extruder Screw and Barrel Guide: Types, Design, Materials, and When to Replace
An extruder screw and barrel are the matched pair that does most of the work inside an extruder. Together they convey the plastic, melt it, mix it, and build the pressure that pushes it through the die. How well they do that job depends on one small dimension, the clearance between the screw flights and the barrel wall.
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