Dual Splice Filament Creator

Custom Two-Color Filament Splicer

Here are some unique models that let you craft your own two-color filament directly on your 3D printer. This tool is perfect for those who want to add a personal touch to their 3D prints by controlling the color transitions in their filament.

The process is simple: choose two filament colors, and the model will seamlessly splice them together, alternating between the two colors. You can select from various splice lengths—20 mm, 50 mm, 200 mm, or 500 mm—depending on how quickly you want the colors to change. Unlike commercial gradient filaments that gradually blend from one color to another, this model produces quick transitions, giving your prints a distinct and vibrant appearance.

Whether you're looking to create a striking two-tone effect or simply want to experiment with color, this model provides the flexibility to do so. Plus, with different models available, you can tailor the amount and speed of the color changes to suit your project needs.

Use this filament just like any standard filament and add a new dimension to your 3D prints.

Important - Please Read Before Printing

This model is intended for users with some 3D printing experience. While it is not difficult, it does require careful setup and attention. Most failed prints so far have been traced to skipped preparation steps rather than issues with the model itself.

Before printing the full model, please print the included Sample size model first.

The sample is designed to verify that your printer, bed adhesion, and settings are dialed in before committing to a longer print.

Please follow these guidelines carefully:

• Clean the build plate with soap and water (not just IPA). This print depends on reliable first-layer adhesion.
• Do not skip bed leveling or calibration, even if your printer usually prints well.
• Use standard PLA for initial testing.
• Do not attempt this with specialty filaments (silk, CF, glow, filled, brittle, or flexible filaments).
• Avoid old, wet, or poorly stored filament.

If the sample does not print cleanly and stay firmly attached to the bed, do not proceed to the full model yet—take a moment to correct adhesion or calibration first.

About Ratings 

If you run into trouble, please consider adjusting your setup and retrying before leaving a rating. This model has been printed successfully by many users, and low ratings caused by skipped preparation steps make it harder for others to find a working solution.

If you believe there’s an actual issue with the model or profile, constructive feedback is always welcome and appreciated.

Taking a little extra care up front will lead to a successful print and a much better experience overall.

Check out these other custom filaments you can make: Tricolor, Quad-Color, Custom Colors, and Stratified.