Collection: Multicolor Transitions

Multicolor Transitions for 3D Printing

Bring your prints to life with our stunning multicolor transitions — filaments that shift shades as you print. Each spool is one-of-a-kind, offering rich blends and smooth gradients that evolve throughout your model. Whether you’re chasing the boldness of rainbow filament or the subtlety of color fades, this collection transforms your designs into dynamic, eye-catching pieces.

At Protopasta, we handcraft every transition in small batches, using our unique in-line color blending process. That means no two spools are ever the same — and that’s exactly the point. Our multicolor transitions aren’t just beautiful; they’re made for experimentation, for surprise, and for fun. Created by makers, for makers, these filaments celebrate creativity and unpredictability in the best way possible.

Filaments That Shift, Fade & Surprise

What Are Multicolor Transition Filaments?

Multicolor transitions are filaments that change color along the spool, gradually shifting hues as you print. Each layer reveals something new — no extra slicer settings or filament swaps needed.

Some transitions span bold primary colors; others are soft, pastel blends or translucent fades. You never quite know what you’ll get, and that’s part of the appeal. It’s a perfect match for organic shapes, decorative prints, and anyone who loves a bit of unpredictability.

Handcrafted by the Protopasta Team

Unlike mass-produced color-changing materials, Protopasta transitions are blended by hand using our signature small-batch method. Our team plays with ratios, layering, and base materials to produce unique rolls that can’t be replicated.

We embrace “perfectly imperfect” outcomes — gradients that shift unexpectedly, sections with visual texture, and blends that look different from every angle. No gimmicks, no shortcuts — just filament made with imagination.

Filaments That Make Every Print Unique

Rainbow Filament Without the Harsh Lines

Forget the sharp jumps between colors. Our rainbow filament transitions are soft and gradual, designed to blend rather than block. The colors melt into one another, creating a dreamy effect from bottom to top.

Use them for vases, toys, ornaments, and artistic pieces where visual impact matters. Because of the longer transition lengths, even large prints feel like evolving works of art.

Translucent Effects & Layer Depth

Many of our filaments include a translucent filament base that adds depth and light diffusion to your prints. Think stained glass, shimmering edges, and layered color effects that vary depending on lighting and wall thickness.

These filaments look fantastic in spiral vase mode or as light shades, letting you experiment with light, structure, and shape.

Designed for Fun, Built to Perform

Color-Changing Filament for Play & Prototyping

While not temperature-sensitive, our color-changing filament lineup shifts visibly from color to color down the spool — creating the illusion of movement as your model prints. It’s a joyful way to add surprise to every layer.

Because it’s based on our high-quality PLA or HTPLA, you still get great printability and detail. These filaments are just as functional as they are fun.

Created by Makers, for Makers

Every roll of Protopasta filament is made in Vancouver, Washington by a tight-knit team of makers. We test every spool ourselves and share the results with our community — not just to sell product, but to inspire creativity.

Our multicolor transitions are born from curiosity and made to encourage yours. No two prints will ever be the same — and we love it that way.