Title

Extrusion Processing of 3D Printer Filament

Document Type

Presentation

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Publication Date

Spring 2021

Abstract

The plastics industry has been utilizing 3D printing more over time. The process of 3D printing allows prototypes to be made without molds, more quickly, and at lower cost than traditional methods. The goal of this project was to produce commercial quality 3D printing filament utilizing one of PSU’s extrusion machines. The 3D printer filament extrusion was accomplished using a Yellow Jacket extruder in the Pittsburg State University Plastics Lab. Previously, groups struggled to produce filament with the dimensional and quality standards required for standard printing. This led to issues in 3D printing, such as under extrusion and lack of bed adhesion. The parameters for the filament was determined by matching the industry standard: circular, rather than oblong, was 1.75 mm with a tolerance of +/-0.05 mm in diameter. Filament was made from different types of materials to determine the success of extrusion. Extrusion temperatures were reduced from those used previously. Also, the water trough was heavily reconfigured: the third wheel on the trough was adjusted closer to the extruder, and the water level was raised to cool the material before it reached the first wheel. This would allow the filament to keep its circular shape by allowing it to solidify before it turned 90 degrees. Multiple materials, including acrylonitrile-butadiene-styrene (ABS), red ABS, and polylactic acid (PLA), were successfully extruded, processed through the printer, and tested using tensile testing. Printed layer adhesion and strength of the product was the focus of tensile testing of 3D printed dog bone parts.

Comments

Category A - Award recipient

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