From Color-Mixing Principles to Printing Tips: A Quick Guide to Full Spectrum 3D Printing

Is Full Spectrum 3D Printing Gaining Popularity?

Recently, Full Spectrum Printing has continued to gain popularity in 3D printing communities in China and abroad. So, what exactly is Full Spectrum Printing?

Simply put, it uses “CMYK base colors + a multi-color printing system + software algorithms + optical color-mixing principles” to enable users to print rich gradients and intermediate colors using only four colors of filament.

· Example of a Color-Mixing Printed Model ·

Compared with conventional multi-color printing, Full Spectrum places greater emphasis on “color mixing” rather than “color switching,” giving limited color combinations more creative possibilities.

What Are the Advantages and Limitations of Full Spectrum?

Advantages:

More intermediate colors and gradient effects can be achieved with a small number of base colors;

Reduces the number of filament types and lowers color-management costs;

Suitable for works requiring continuous color transitions, such as figures, anime models, and artistic models.

Limitations:

Based on practical feedback, Full Spectrum usually uses lower layer heights, which significantly increases printing time. If a single-nozzle filament-changing system is used, frequent color changes at layer transitions will also generate more waste. In addition, color-mixing models are affected by factors such as material transparency and layer thickness, and certain color differences may occur between different models.

Color-Mixing Printing Material—PLA+CMYK

Long before Full Spectrum became a popular topic, eSUN had already begun exploring the application of the CMYK base-color system in FDM multi-color printing, and launched the PLA+CMYK set in 2024.

For Full Spectrum, material performance is one of the important factors affecting color-mixing results. Material flowability, color consistency, interlayer bonding, and printing stability all directly affect the final color-mixing effect.

To achieve a finer color-mixing effect, Full Spectrum usually uses a lower layer height of 0.04mm–0.08mm for printing. In this case, if the filament has poor flowability, filament breakage, stringing, or material buildup may easily occur, resulting in “color-mixing failure” or even nozzle clogging.

The eSUN PLA+CMYK set continues the stable and easy-to-print characteristics of the PLA+ series. In addition to being suitable for creations such as gradient decorative parts, character figurines, and translucent reliefs, it can also meet the needs of Full Spectrum color-mixing printing and provide users with richer ways to express color.

How Can the Full Spectrum Printing Success Rate Be Improved?

Use CMYK materials from the same brand and series whenever possible, and avoid mixing different materials. This is not only because of color differences, but also because materials from different brands have different melting points and light transmittance (TD values);

Select the layer height appropriately according to the characteristics of the model, achieving a balance between printing efficiency and color performance;

Keep the filament dry before printing to reduce stringing and other printing issues caused by moisture absorption;

For the first print, it is recommended to start with a smaller model with relatively simple color changes, and gradually become familiar with the color-mixing effect.

eSUN PLA+CMYK is compatible with mainstream slicing software such as Snapmaker Orca, Bambu Studio, OrcaSlicer, and Prusa Slicer, and provides reference for official dedicated preset parameters.

In just three simple steps, you can easily experience color-mixing printing:

Explore more color possibilities with four base colors.

In the new era of multi-color printing, CMYK is no longer merely four spools of filament in different colors, but also a fundamental language for building rich colors.

We look forward to seeing more of your excellent multi-color printed works!