Plastic Recycling
From Hack Manhattan Wiki
Plastic Recycling
The goal of this initiative is to reduce plastic waste from 3D printing to upcycle into usable materials.
Plastic Shredder
Equipment
- Precious Plastic Shredder Box
- Motor (Need to acquire)
- Nema 56
- Gearbox
- Coupler
- Shredder Shaft is 1.18
- Hopper (need to 3d printable)
Parts Cost
| Part Name | Cost | Link |
|---|---|---|
| Shredder Unit | $675 | https://preciousplasticnewyork.com/products/precious-plastic-shredder-unit-new |
| CALM63-80/1-56C Aluminum Worm Gear Reducer | $297.75 | https://www.globalindustrial.com/p/calm63-801-56c-aluminum-worm-gear-reducer-63mm-801-56c-nema-frame |
| Flexible Shaft Coupling Iron Hub with Set Screw, 3-31/64" Overall Length, Keyed Shaft | $69.53 | https://www.mcmaster.com/6408K17/ |
| 3600 rpm Hytrel Rubber Spider for 2-35/64" OD Flexible Shaft Coupling Iron Hub | $129.63 | https://www.mcmaster.com/6408K96/ |
| Aluminum Unthreaded Through-Hole Spoked Hand Wheel | $105.93 | https://www.mcmaster.com/3724T62/ |
| 1045 Carbon Steel Keyed Rotary Shaft Fully Keyed, 5/8" Diameter, 6" Long | $14.61 | https://www.mcmaster.com/1497K107/ |
| CALM63-DS Double Output Shaft For CALM Series 63mm | $43.95 | https://www.globalindustrial.com/p/calm63-ds-double-output-shaft-for-calm-series-63mm-aluminum-worm-gear-reducer |
| Example | Example | Example |
| Example | Example | Example |
| Example | Example | Example |
| Example | Example | Example |
| Example | Example | Example |
| Machine Key, Rounded, Steel, 3/16" x 3/16", 1/2" Long, Oversized | $5.78 | https://www.mcmaster.com/catalog/130/3848/98870A560 |
| Example | Example | Example |
Issues
- Shaft Bent: Misaigned lovejoy connectors results in primary shaft no longer fitting into the gear reduction smoothly. Temp fix was to sand the inside of the output shaft bearing.
- Alignment:gearbox and shredder are not perfectly aligned
- Sieve: Using the included sieve resulted in the majority of the scraps stuck at the bottom. May be better to shred without the sieve and filter for another pass after.
- Physical effort: Both can be solved with a motor or stepper with speed and direction control.
- Wheel is great for speed but terrible with minimal blockage
- Ratchet is great for blockage but very slow
Plastic Press
tshirt press modified with silicone bed on the bottom below an ender5plus bed.
TODO
- Shredder Timelapse Camera
- Rotation counter
- Build a metal frame to mount the shredder pieces
- Create a hopper cover for the shredder
- Artme3D filament extruder: https://www.youtube.com/watch?v=BT04glGDjB4&ab_channel=CNCKitchen
