3D Printer Configurator

Multi-Material Units

Compare MMU systems and explore their features.

ERCF V2
Selector Cart 4–12 Colors

ERCF V2

The community gold-standard multi-material unit

Happy Hare Details →
Box Turtle
Lane-Based 4 Colors

Box Turtle

Open-source AMS-style filament changer for Klipper

AFC Klipper Add-On Details →
TradRack
Linear Rack Up to 20+

TradRack

Ultra-scalable linear rack filament changer

Happy Hare Details →
3DChameleon
Y-Splitter 4 Colors

3DChameleon

Universal Y-splitter MMU — simplest mechanical design

None required Details →
3MS
Y-Splitter 3–8 Colors

3MS

The simplest and cheapest Klipper MMU — all Amazon parts

Klipper Details →
Night Owl
Lane-Based 2 Colors

Night Owl

Standalone dual-material unit — minimal and self-contained

Happy Hare Details →
BTT ViViD
Selector-Based 4–16 Colors

BTT ViViD

Commercial all-in-one MMU with dryer, cutter, and RFID

ViViD Firmware / Happy Hare Details →
TriangleLab KMS
Lane-Based 4–8 Colors

TriangleLab KMS

Open-source commercial MMU with motorized rewinder

Happy Hare V3 Details →
HTLF
Camshaft 4 Colors

HTLF

Camshaft-driven MMU — compact and clever

AFC Klipper Add-On Details →
Pico MMU
Servo-Selector 3–4 Colors

Pico MMU

Ultra-minimal single-stepper MMU — ~20s filament swaps

Klipper Details →
QuattroBox
Lane-Based 4 Colors

QuattroBox

AMS-inspired fully printed 4-lane changer

Happy Hare Details →
Prusa MMU3
Selector-Based 5 Colors

Prusa MMU3

Official Prusa multi-material upgrade — Prusa printers only

Prusa Firmware Details →
Mosaic Palette 3
Filament Splicer 4 Colors

Mosaic Palette 3

Universal filament splicer — works with any printer

None required Details →

MMU Compatibility Note

All MMU systems require a compatible toolhead with filament cutter support for best results. Visit the Toolheads page to find cutter-compatible options for your printer. Configure your full MMU BOM on the Home page.