Rat Rig V-Core 4.1
Rat Rig V-Core 4.1
Rat Rig V-Core 4.1
Rat Rig V-Core 4.1
Rat Rig V-Core 4.1
Rat Rig V-Core 4.1
Rat Rig V-Core 4.1
Rat Rig V-Core 4.1

Rat Rig V-Core 4.1

€971,00

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Rat Rig V-Core 4.1 ▪ €971,00
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V-Core 4.1 is a large-format, open CoreXY 3D printer kit designed to grow with you.

With build volumes up to 500 × 500 × 500 mm, a fully open and customizable architecture, and a progressive upgrade path — from single tool to Hybrid and IDEX — it’s a platform you can adapt, expand, and make your own as your needs evolve.

NOTE: Enclosing panels are not included. DXF files available here.

Select your machine size
Includes all structural, mechanical, and motion components.
V-Core 4.1
300 mm ... Efficiency Outer Dimensions (w*d*h): 623.2*583*785mm
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400 mm ... Versatility Outer Dimensions (w*d*h): 723.2*683*885mm
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500 mm ... Scale Outer Dimensions (w*d*h): 823*783*985mm
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Add electronics (required for a complete printer)?
Without this kit, only structural and mechanical parts are included.
Electronics
Yes ... Add complete electronics kit (plug-and-play wiring harness included)
No I will source all electronics separately
Optional upgrades
Enhance your V-Core experience.
Hybrid ... Higher acceleration with upgraded kinematics.
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IDEX ... Print with two materials or two parts at once using copy or mirror modes.
(Includes Hybrid Upgrade)
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No upgrades now You can always upgrade later!
Rat Pack Filter
Carbon filtration for enclosed machines.
For ABS, ASA, PC, Nylon and other fume-emitting materials.
Rat Pack
Yes ... Add enclosed filtration system
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No Skip filtration
Summary
    Total Estimate:
    ...

    V-Core 4.1 Documentation Hub

    Files
    Guide
    Commissioning

    A Next-Gen CoreXY 3D Printer Kit

    v-Core 4.1

    Watch Video

    Up to 500mm

    Open System

    Peak Performance On Larger Machines

    Perfect First Layer

    Less Time to Print Multiple Parts

    Pre-made cables & no crimping required

    3 Build Volumes

    300 x 300 x 300mm
    400 x 400 x 400mm
    500 x 500 x 500mm

    Progressive Upgrade Path Modes

    Easily upgrade standard into Hybrid and then Hybrid into IDEX - Conversion between modes is just a matter of adding a few parts, no frame rebuild is necessary.

    Standard - Great performance, simpler than ever build process
    Hybrid - Ludicrous performance: double your y axis acceleration
    IDEX - Print with 2 materials and double your output for 2 parts at once or for multi-material parts

    Peak Performance On larger machines

    Experience Unbeatable Performance on Even the Largest Machine Sizes

    Less Time

    To print multiple parts

    Cut print time in half for multiple identical parts with the IDEX upgrade kit

    Purchase here

    1. Multi-material printing ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎2. COPY MODE ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎3. MIRROR MODE

    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.

    Perfect 1st Layer with the Beacon

    Auto Z calibration compatible with any print surface via Beacon Contact.

    The fastest, most precise & accurate probe on the market.

    Open system

    A fully open-source 3D printer puts you in control. With complete CAD files available, you’re free to modify, upgrade, or repair every part to fit your exact needs.

    V-CORE 4.1 - NEW FEATURES

    A steel X-axis gantry, full-metal toolhead, improving rigidity, cooling, and print consistency, unlocking smoother, more reliable performance with RatOS 2.1.

    Faster assembly. Simpler maintenance.

    Steel X-axis gantry

    improved part cooling

    Full-metal skeleton toolhead

    Designed for real-world use

    FULL METAL MOTION SYSTEM

    High grade Steel Linear Rails on every axis

    STURDIER Z-ARMS

    8mm thick beds on 400 and 500 sizes

    UNIVERSAL FRAME

    DROP IN IDEX FEATURES

    UNIVERSAL FRAME

    included steel base plate

    electronics enclosure

    electronics enclosure

    endstop

    Self Enclosed Design
    Technical Specifications
    IDEX BUILD AREA per TOOLHEAD

    Documentation

    Build guide:
    Step-by-step guide available here .

    CAD Models

    300 400 500
    CoreXY View View View
    Hybrid View View View
    IDEX View View View

    Community

    Rat Rig 3D Printer Community (Facebook)

    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.