Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit
Rat Rig V-Core 4.1 Upgrade Kit

Rat Rig V-Core 4.1 Upgrade Kit

€158,54

Shipping calculated at checkout

SKU: VC-4.1-UP

Bring the V-Core 4 experience to its next level
The V-Core 4.1 Upgrade Kit delivers the most meaningful refinements of the platform to existing V-Core 4.0 machines, focusing on stability, integration, and day-to-day usability.

All-new full-metal toolhead architecture
A purpose-built, rigid toolhead with significantly improved part cooling, integrated with the Orbitool O2S toolboard. The result is a clean, single-cable toolhead connection with fewer cables, fewer connections, faster assembly, and simpler long-term maintenance.

Steel X-axis gantry
Eliminates bi-metal thermal distortion in the X-axis assembly, improving thermal stability and delivering more consistent, repeatable first layers, especially in enclosed setups.

To fully unlock these hardware improvements, the upgrade is designed to be paired with RatOS 2.1 — introducing smarter calibration behaviour through an improved compensation mesh, enhanced multi-point true zero measurement, and adaptive heat soak for greater consistency with less manual tuning.

Upgrade Configurator

Step 1 of 3
What is your machine size?
300mm
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400mm
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500mm
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Which machine are you upgrading from?
CoreXYv4.0
Hybridv4.0
IDEXv4.0
Which machine are you upgrading to?
CoreXYv4.1
Hybridv4.1
IDEXv4.1
    Total Estimate:
    ...
    In stock

    V-CORE 4.1 UPGRADE KIT

    The V-Core 4.1 Upgrade Kit brings the core 4.1 improvements to existing V-Core 4 machines, adding a steel X-axis gantry, full-metal toolhead, improving rigidity, cooling, and print consistency, unlocking smoother, more reliable performance with RatOS 2.1.

    A Next-Gen CoreXY 3D Printer Kit

    v-Core 4.1

    Watch Video

    Faster assembly. Simpler maintenance.

    Steel X-axis gantry

    improved part cooling

    Full-metal skeleton toolhead

    Designed for real-world use

    Steel X-axis gantry

    Reduces bi-metal effect and increases rigidity, delivering more consistent first layers and reliable layer stacking, even at high speeds.

    Orbitool 02S Toolboard

    Centralizes all toolhead wiring into a single, clean umbilical, reducing connectors and failure points. Shorter, direct cables improve reliability, simplify assembly, and make maintenance far easier over the life of the machine.

    RatOS 2.1

    Enhanced calibration, adaptive heat soak, and repeatable first-layer routines ensure consistent starts and smoother, predictable prints every time.
    improved compensation mesh
    enhanced multi-point true zero measurement
    adaptive heat soak

    Easy Build, Easy Setup

    For V-Core 4.1, the entire build documentation was created anew — with fully structured, end-to-end, step-by-step guides that walk you through the complete assembly and commissioning process.

    Every step is intentional, clearly explained, and designed to make building the machine straightforward and predictable.

    Full-metal skeleton toolhead

    Boosts motion stability and keeps prints cleaner, while making assembly and servicing faster and simpler.

    Significantly improved part cooling

    Redesigned duct deliver stronger, more uniform airflow for sharper details, better overhangs, and higher-speed printing.

    Refined assembly and maintenance experience

    Fewer inserts, better-protected components, and improved part design make building, servicing, and upgrading faster and less error-prone.

    Designed for real-world use

    Every improvement stems from user feedback, removing friction and interruptions to make the machine simply work reliably, day after day.

    KIT INCLUDES

    • Steel X-Gantry
    • New Full Metal Toolhead Plates
    • Orbitool O2S
    • Premade Cable - Orbitool to Endstop
    • Premade Cable - Orbitool to Beacon

      Upgrade kit does not include printed parts.
      Check the full BOM here: V-Core 4.1 Upgrade Kit

    DOCUMENTATION

    Build guide: Step-by-Step guide

    COMMUNITY

    Facebook: Rat Rig 3D Printer Community

    Discord: discord.gg/ratrig

    License

    Creative Commons License

    This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International

    This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator. If you remix, adapt, or build upon the material, you must license the modified material under identical terms. CC BY-NC-SA includes the following elements:

    BY: credit must be given to the creator.
    NC: Only noncommercial uses of the work are permitted.
    SA: Adaptations must be shared under the same terms.