date-created: '2020-05-27'
date-updated: '2025-04-04'
manifest-author:
    name: Appropedia
    email: admin@appropedia.org
title: 'Open-Source Grinding Machine for Compression Screw Manufacturing'
description: 'Some of the most promising distributed recycling and additive manufacturing (DRAM) technical systems use fused particle fabrication (FPF) or fused granular fabrication (FGF), where compression screws force post-consumer waste plastic through a heated nozzle for direct 3D printing. To assist the technical evolution of these systems, this study provided the details of an invention for a low-cost, easily replicable open-source grinding machine for compression screw manufacturing. The system itself can be largely fabricated using FPF/FGF following the self-replicating rapid prototyper (RepRap) methodology. This grinding machine can be made from a cordless cut-off grinder and < $155 in parts. The new invention is demonstrated to be able to cut custom screws with variable (i) channel depths, (ii) screw diameters, (iii) screw lengths, (iv) pitches, (v) abrasive disk thicknesses, (vi) handedness of the screws, (vii) and materials (three types of steel tested: 1045 steel, 1144 steel, and 416 stainless steel).'
keywords: 'grinding machine, open-source appropriate technology, compression screw, grinding, cylindrical grinding machine, material extrusion, angle grinder, Circular economy, Distributed recycling, Polymer recycling, Sustainable development, distributed manufacturing, life cycle analysis, recyclebot, 3d printing, Open source hardware, Open hardware, RepRap, Recycling, Polymers, Plastic, Recyclebot, Waste plastic, Composites, Polymer composites, Extruder, Upcycle, Materials science, additive manufacturing, open-source'
project-link: 'https://www.appropedia.org/Open-Source_Grinding_Machine_for_Compression_Screw_Manufacturing'
contact:
    name: U
    social:
        platform: Appropedia
        user-handle: U
version: 45
development-stage: D
made: false
image: 'https://www.appropedia.org/w/images/6/6c/OSGrinder.png'
license:
    documentation: CC-BY-SA-4.0
licensor:
    name: U
    affliation: C
    contact: 'https://www.appropedia.org/U'
documentation-home: 'https://www.appropedia.org/Open-Source_Grinding_Machine_for_Compression_Screw_Manufacturing'
documentation-language: e