How to Recycle Failed 3D Prints into New Filament (Step-by-Step)

Every 3D printer owner knows the pile: failed prints, supports, rafts, purge lines and half-used spools. Instead of throwing that plastic away, you can grind it down and turn it back into usable filament at home or in your workshop.

Why recycle your 3D printing waste?

  • Cut filament costs by reusing plastic you already paid for.
  • Reduce waste from supports, test prints and failed jobs.
  • Experiment freely with custom colors and blends.

What you need

Step 1: Sort and clean your scraps

Separate your waste by material type and remove any metal, glue, tape or labels. Mixing materials leads to weak, inconsistent filament.

Step 2: Shred the plastic

Feed failed prints and supports into the crusher to get small, uniform pieces. Consistent piece size helps the extruder feed smoothly.

Step 3: Dry the shreds

Plastic absorbs moisture, which causes bubbles and brittle filament. Dry the shredded material before extruding.

Step 4: Extrude new filament

Load the dried shreds into the C1 extruder, set the temperature for your material, and check the diameter regularly as it winds onto the spool.

Step 5: Test print and fine-tune

Print a small calibration model with your recycled filament and adjust extrusion temperature and speed until the results are consistent.

Start closing the loop

With a crusher and an extruder, your print waste becomes your next spool. Explore the C1 Filament Extruder & Recycler and the Plastic Crusher, available in 110V and 220-230V versions with worldwide shipping.