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Make Your Own 3D Printer Filament by Building Your Own Filament Extruder - 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing
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83-Year-Old Inventor Designs Inexpensive Open-Source Filament Extruder to Cut the Cost of 3D Printing
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Build Your Own 3d Printer Filament Factory (Filament Extruder) : 12 Steps (with Pictures) - Instructables
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