Open-Source Grinding Machine for Compression Screw Manufacturing

Franz, Jacob; Pearce, Joshua M.

doi:10.3390/inventions5030026

Cited by 8 publications

(5 citation statements)

References 76 publications

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“…First, the mechanical properties of the prints were weaker than with other methods, due to the non-uniform printing and high porosity that is resulted from the weaker deposition accuracy of a heavy hangprinter head combined with non-uniform feedstock. Future work could develop a new version of the direct waste hangprinter using a smaller recyclebot-based motor and low-cost, opensource custom screws [72] based on recyclebots rather than an FPF/FGF head. Second, the nature of the currently used hangprinter design has a volume and shape limitation, as the larger head can run into the cables.…”

Section: Discussion and Future Workmentioning

confidence: 99%

Waste Plastic Direct Extrusion Hangprinter

et al. 2022

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As the additive manufacturing industry grows, it is compounding the global plastic waste problem. Distributed recycling and additive manufacturing (DRAM) offers an economic solution to this challenge, but it has been relegated to either small-volume 3D printers (limiting waste recycling throughput) or expensive industrial machines (limiting accessibility and lateral scaling). To overcome these challenges, this paper provides proof-of-concept for a novel, open-source hybrid 3D printer that combines a low-cost hanging printer design with a compression-screw-based end-effector that allows for the direct extrusion of recycled plastic waste in large expandable printing volumes. Mechanical testing of the resultant prints from 100% waste plastic, however, showed that combining the challenges of non-uniform feedstocks and a heavy printhead for a hangprinter reduced the strength of the parts compared to fused filament fabrication. The preliminary results are technologically promising, however, and provide opportunities to improve on the open-source design to help process the volumes of waste plastic needed for DRAM to address the negative environmental impacts of global plastic use.

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Section: Discussion and Future Workmentioning

confidence: 99%

Waste Plastic Direct Extrusion Hangprinter

et al. 2022

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“…Future study is also needed to improve slicing and other means to overcome the warping observed with large LDPE prints. Lastly, there has been progress on development of custom screws for DRAM, 75 and information from Justino et al , 76 which reported a systematic review of screw-assisted 3D printing equipment, could be used for optimizing additive manufacturing (AM) of LDPE with screw extrusion technology.…”

Section: Resultsmentioning

confidence: 99%

Finding Ideal Parameters for Recycled Material Fused Particle Fabrication-Based 3D Printing Using an Open Source Software Implementation of Particle Swarm Optimization

Oberloier

Whisman

Pearce

2023

3D Printing and Additive Manufacturing

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As additive manufacturing rapidly expands the number of materials including waste plastics and composites, there is an urgent need to reduce the experimental time needed to identify optimized printing parameters for novel materials. Computational intelligence (CI) in general and particle swarm optimization (PSO) algorithms in particular have been shown to accelerate finding optimal printing parameters. Unfortunately, the implementation of CI has been prohibitively complex for noncomputer scientists. To overcome these limitations, this article develops, tests, and validates PSO Experimenter, an easy-to-use open-source platform based around the PSO algorithm and applies it to optimizing recycled materials. Specifically, PSO Experimenter is used to find optimal printing parameters for a relatively unexplored potential distributed recycling and additive manufacturing (DRAM) material that is widely available: low-density polyethylene (LDPE). LDPE has been used to make filament, but in this study for the first time it was used in the open source fused particle fabrication/fused granular fabrication system. PSO Experimenter successfully identified functional printing parameters for this challenging-to-print waste plastic. The results indicate that PSO Experimenter can provide 97% reduction in research time for 3D printing parameter optimization. It is concluded that the PSO Experimenter is a user-friendly and effective free software for finding ideal parameters for the burgeoning challenge of DRAM as well as a wide range of other fields and processes.

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“…First, the mechanical properties of the prints were weaker than with other methods, which is due to non-uniform printing and high porosity that is the result of the weaker deposition accuracy of a heavy hangprinter head combined with non-uniform feedstock. Future work could develop a new version of the direct waste hangprinter using a smaller recyclebot-based motor and low-cost open source custom screws [63] based off of recyclebots rather than an FPF/FGF head. Second, the nature of the currently-used hangprinter design has a volume and shape limitation as the larger head can run into the cables.…”

Section: Discussion and Future Workmentioning

confidence: 99%

Waste Plastic Direct Extrusion Hangprinter

Petsiuk¹,

Lavu²,

Dick³

et al. 2022

Preprint

Self Cite

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As the additive manufacturing industry grows, it is compounding the global plastic waste problem. Distributed recycling and additive manufacturing (DRAM) offers an economic solution to this challenge, but it has been relegated to either small-volume 3D printers (limiting waste recycling throughput) or expensive industrial machines (limiting accessibility and lateral scaling). To overcome these challenges, this paper provides proof-of-concept for a novel open-source hybrid 3D printer that combines a low-cost hanging printer design with a compression screw-based end-effector that allows direct extrusion of recycled plastic waste in large expandable printing volumes. Mechanical testing of the resultant prints from 100% waste plastic, however, showed that combining challenges of non-uniform feedstocks and a heavy printhead for a hangprinter reduced the strength of the parts compared to fused filament fabrication. The preliminary results are technologically promising, however, and provide opportunities to improve on the open source design to help process the volumes of waste plastic needed for DRAM to address the negative environmental impacts of global plastic use.

show abstract

Open-Source Grinding Machine for Compression Screw Manufacturing

Cited by 8 publications

References 76 publications

Waste Plastic Direct Extrusion Hangprinter

Waste Plastic Direct Extrusion Hangprinter

Finding Ideal Parameters for Recycled Material Fused Particle Fabrication-Based 3D Printing Using an Open Source Software Implementation of Particle Swarm Optimization

Waste Plastic Direct Extrusion Hangprinter

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