Rat Rig V-Core 4.1 Upgrade kit

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Rat Rig V-Core 4.1 Upgrade Bring the V-Core 4 experience to its next levelThe 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 architectureA 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 gantryEliminates 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 behavior through an improved compensation mesh, enhanced multi-point true zero measurement, and adaptive heat soak for greater consistency with less manual tuning. Show more