The Multi-Mono hose and tube die from Guill Tool & Engineering, W. Warwick, R.I., is available in both crosshead and inline configurations in sizes from 0.762 mm to 3 in. With a patent-pending design, polymer is extruded in multiple thin, alternating layers. This is said to eliminate weld lines and increase burst strength. Applications include medical tubing, irrigation hoses, automotive fuel lines, and pipe.
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Metal parts are made by laser sintering, and plastic prototypes are made by inkjet or FDM processes. Plastic production parts could be next.