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greenBull Version 2 4'x8' and 5'x10' CNC Router Kit

$8,397.25 USD

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Title greenBull v2 4'x8' 60° CNC Router Kit

The greenBull v2 is no longer sold as a kit.

The full design is available as an instant digital download: greenBull v2 4'x8' and 5'x10' plans (flat or 60°, with optional laser gantry and 4th axis). We stock the electronics and mechanical parts to build it. This page is kept for reference.

Discover our user-friendly large format CNC Router. It sets you up for quickly creating cabinets, signs, and a myriad of other projects. Our CNC router is constructed from Medium Density Overlay (MDO), a wood renowned for its exceptional resistance to high moisture levels. A space saving angled version is also available. This CNC router has the capability of automated cutting, milling, drilling, 3D carving and pocketing (all subtractive fabrication). Materials that this CNC router can cut or engrave is soft metals (aluminum, brass, mild steel, wood of all types, plastics of all types, foam and other similar materials).

Machine Technical specifications:

Maximum Stock Size & Machine Envelope: Our CNC routers are designed to accommodate stock sizes equivalent to their specified dimensions (e.g., 4'x8', 5'x10'). The actual working envelope of the machine is larger, 25 inches wider and 40 inches longer (The extra length can accommodate a laser gantry). For instance, the greenBull v2 4'x8' model easily accepts a 4'x8'.

Z-Axis Travel: Features an impressive 7-inch travel on the Z-axis.

High-Performance Spindle: Designed around a 220V 2.2kW spindle and VFD, ensuring powerful and efficient operation.

Mechanical Movement: The X-axis benefits from a roller chain and drive sprockets system, while the Y and Z axes operate on a precise 1/2" lead screw, ensuring smooth and accurate movement.

Robust Construction: The structure is based around MDO (Medium Density Overlay), complemented by an Aluminum Y carriage and Steel Rails conforming to HIWIN specifications.

Advanced Electronics: Designed for either a Mach3 USB controller or a standalone CNC controller. All axes are powered by NEMA 34 closed-loop stepper motors with matched drivers. Each driver is equipped with its own power supply for optimal performance.

For those seeking a space-efficient solution, our 60-degree model is an ideal choice, boasting a compact overall width of just 63 inches for the 4'x8' model. This design is optimized for placement against a wall, requiring access from only one side, thus maximizing your workspace efficiency.

Accuracy and Precision

The resolution per axis is adaptable, allowing changes to the driver's microstepping settings. Typically configured to achieve over 1000 steps per inch, balancing mechanical and digital precision. The X and Y axes employ tensioned roller chains, minimizing backlash and enhancing repeatability. Accuracy is largely dependent on machine calibration and squaring. Squaring is streamlined, involving adjustments to the roller chain sprockets and the gantry back hardware. Once squared and relaxed, the hardware is secured to maintain permanent squareness. Calibration is software-assisted and as accurate as the physical measurement system allows.