3D printing does not inherently generate waste; however, the spools used often become discarded by-products. After accumulating these spools for years, we have effectively repurposed them. Each sheet transforms 34 spools, rendering them suitable for diverse applications such as furniture and product design.
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First, sort the coils by material type, such as PP and PS, and use an industrial shredder to create particles with a uniform texture of about 0.2 inches (5 mm).
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Assembly Instructions for Mould
To assemble the mould, begin by placing a thin metal sheet coated with natural wax within it. Next, position the structure according to the desired shape and size. For this example, the mould measures 60 x 60 cm (24 x 24 inches) and is 2 cm (0.8 inches) thick. The material usage for this mould is approximately 8 kg (17.6 lbs).
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Place the material inside and cover it with another sheet of waxed metal to prevent sticking. Activate the press and heat to 230°C (446°F) for 45 minutes or until the plastic begins to overflow. Allow it to cool after the heating period.
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3D printing waste reduction through spool repurposing involves industrial tools and custom fabrication processes. Below are the key components required for transforming plastic spools into sheets for design applications.
Tools
- Material sorting system (for PP, PS, and other plastics)
- Precision measurement tools (for 5 mm particle uniformity checks)
- Thermal control devices (for monitoring 230°C/446°F temperatures)
- Wax application equipment (for metal sheet coating)
- Cooling timers (for post-press hardening)
Hardware
- ~~Industrial shredder~~ (5 mm particle output capacity)
- ~~Heated hydraulic press~~ (60x60 cm platen size)
- ~~Custom aluminum mold~~ (24"x24"x0.8" dimensions)
- ~~Wax-coated steel sheets~~ (food-grade release surfaces)
- ~~High-capacity drying racks~~ (for post-processing)
Consumables
- 8 kg plastic spool material per sheet
- Natural wax release agent
- Heat-resistant mold seals
- Protective gloves (for 230°C operations)
- Insulation materials (thermal process safety)
All listed equipment can be sourced from industrial suppliers in Madrid like ~~Hercort~~ for shredders or ~~Tecni-Molde~~ for custom molds.
Articles
- How to Recycle PS Spools into 3D Prints: A DIY Guide
- 3D Printing with Recycled Plastic: Sustainable Solutions for the Future
- Closed-loop additive manufacturing fueled by upcycled plastic
- Sustainable 3D Printing: Create and Use Recycled Filament
- Environmental Benefits of 3D Printing with Recycled Filament
- Polyformer: from PET bottles to 3D printing filaments
- Recycle plastic waste into 3d printing filament
- Combination 3D Printer will Recycle Plastic in Space
Books
Papers
- Closed-loop Additive Manufacturing of Upcycled Commodity Plastic through Dynamic Crosslinking
- ~~Exploring Computational Media as a Possible Future of Software~~