If you 3D print regularly, you’ve probably seen it — the dreaded failed print pile. Whether due to nozzle clogs, warped beds, or bad adhesion, failed prints are common. But don’t throw them away! You can reuse failed 3D prints and turn them into new, useful filament or products.
In this guide, we’ll show you how to repurpose broken prints step-by-step and join the movement toward zero-waste 3D printing.
♻️ Why Reuse Failed Prints?
- ✅ Reduce plastic waste
- ✅ Save money on filament
- ✅ Eco-friendly & responsible printing
- ✅ Great for schools, labs, and small businesses
- ✅ Helps in creating circular 3D production systems
🧱 Step-by-Step: Reusing Failed Prints into New Filament
🔹 1. Sort the Plastic
Separate by material:
- PLA
- PETG
- ABS
- Nylon
❗ Never mix materials – they melt at different temperatures and will ruin the filament.
🔹 2. Clean the Prints
Remove dust, paint, stickers, or adhesive residues.
Cut off supports, raft, or brims.
🔹 3. Shred into Small Pieces
Use a plastic shredder or DIY setup:
- Manual shredder
- Electric shredder for bulk
- You can also cut into small bits with strong scissors (for small volume)
🔹 4. Melt and Extrude
Feed the shredded plastic into:
- A RecycleBot
- A filament extruder machine
- Local community print labs with recycling units
Set the correct temperature for the material (e.g., PLA ~190–210°C).
🔹 5. Spool & Test
As filament comes out:
- Cool with a fan
- Roll onto spool
- Test thickness (1.75mm or 2.85mm) with a caliper
- Store in dry conditions
🔧 Alternative Ways to Reuse Failed Prints (Without Filament Making)
| Method | How It Works |
|---|---|
| Remelt & Mold | Melt failed PLA and pour into silicone molds |
| Regrind + Resin Mix | Mix shredded plastic into resin for hybrid prints |
| Art & DIY Projects | Turn broken parts into mosaic art or lamps |
| Repair & Reuse | Join broken pieces with glue/heat for functional use |
🧠 Tips to Reduce Print Failures
- Use adhesion tools (glue stick, tape)
- Keep nozzles clean
- Dry your filament
- Don’t ignore the first layer – level your bed
- Slice with correct speed & temp settings
🧑🏫 Trinity Layers: Waste Recovery Project
We’re working to:
- Collect failed prints from customers
- Offer discounts on reused filament
- Partner with schools for zero-waste workshops
- Launch a Filament Buy-Back Program
💬 One failed print doesn’t have to be the end. It can be the beginning of your next project.