FFFManufacturer image: Rat RigRat Rig V-Core 4.1
Open-source CoreXY printer kit with standard, hybrid and IDEX upgrade configurations.
Source reviews: 2026-10-16.
Specifications are reported claims, not independent test results.
The details that matter.
Published specifications for this model. Follow a field's source for its configuration and measurement conditions; older fields refer to the profile's reference list.
| Introduction year | Not verified |
|---|---|
| Model family | V-Core 4.1 |
| Process | FFF |
| Build envelope (X × Y × Z) | Not verified |
| Nominal box volume | Not verified |
| Enclosure | Not verified |
| Maximum nozzle temperature | 350 °C Manufacturer configuration rating; self-sourced heaters, sensors and hotends may differ. |
| Materials cited in this profile | Thermoplastic filament |
| Manufacturer listing status | Official documentation available |
| Regional stock and price | Check the manufacturer |
| Market grouping | Consumer · editorial grouping |
Technical specifications
| Build Size Options | 300³, 400³ or 500³ mm |
|---|---|
| Motion Architecture | CoreXY; Hybrid and IDEX upgrades available |
| Frame Material | 30-series aluminum extrusion |
| X Gantry | Steel |
| Toolhead | Full-metal skeleton |
| Bed Temperature (°C) | 120 |
| Nozzle Diameter Options (mm) | 0.4, 0.6 |
| Bed Probe | Beacon Contact |
| Firmware Platform | RatOS 2.1 |
| Kit Weight Options (kg) | 35, 45, 55 300, 400 and 500 mm kit values respectively, not a single machine weight. |
| Electronics Configuration | Optional electronics kit or self-sourced |
| Enclosure Panels | Not included; DXF cutting files provided |
Choose size and configuration
V-Core 4.1 is a self-assembly platform offered in three nominal sizes. Electronics, Hybrid drive, IDEX and filtration are selectable configurations.
Mode-dependent space
IDEX copy and mirror modes have smaller per-tool working regions. The listed maximum cube should not be treated as the simultaneous two-part envelope. Enclosure panels are not included in the mechanical kit.
Explore the model family.
Introduction year has not been established from the cited evidence.
Family: V-Core 4.1 · Listing status only
Explore Rat Rig through the generationsRead this with the specifications
Kit and open-hardware ecosystem; recorded as a project rather than counted as an assembled-machine OEM. Exact build envelope depends on size and configuration.
A larger nominal envelope does not establish better print quality. Fit depends on the configuration, usable area, supports, and orientation.
INDUSTRY F340
Manufacturer-issued brochure preserved by distributor Multi3DPrint; original manufacturer links are no longer available.

