6'x12' Heavy Duty CNC Spindle/Laser Machine (greenBull 6X)

The greenBull 6X is a massive CNC featuring an enormous 6'x12' cutting area. Big jobs require big machinery and this bad boy is definitely up to the task. Table Not Included Go BIG or Go Home Whether you're looking to automate the process for general woodworking applications, cabinetry, sign-making, construction, or milling other material like acrylic or light aluminum, the greenBull has the power to significantly reduce your production time. The greenBull 6X is big. Who needs a CNC that big? Rick Hebert does. Rick makes cabinets all day and he needs a CNC big enough to handle the material and fast enough to slice production time in half. Click here to see Rick's 6X in action. Technical Stuff

• Actual table dimension for the 6'x12' are 80.078"x169.5" (the overhang in the illustrations should be 3/4" thick)
• The overall design has increased rigidity for the new routing/milling area but still maintains the aesthetics that are common across all of the machines on this site.
• To guarantee that the gantry doesn't flex at all, a series of ribs were added within the gantry box making the entire gantry very similar to a torsion box.
• The motors selected for all of the axes are NEMA 34 with 1/2" shafts (driven by 6.0 amp drivers).
• The dust shoe is redesigned to provide better dust extraction capability.

Important Things to Know:

• The 6X used a standard amount of 65 feet of motor cable, which assumes the computer is placed right next to the machine.
• If you are running a 2.2KW Spindle with Inverter, Laser Attachment, or both, you will need a water cooling system for each. This is a simple system using silicon tubing, a water pump and a 5 gallon bucket.
• The Spindle will require 12/3, 14/3, or 16/3 gauge cable for wiring from the inverter to the wall. You will also need 4 conductor wire for wiring the Spindle to the inverter as a 4th wire for ground is needed. It is important to understand the electrical requirements for wiring the Spindle, so for this reason we strongly recommend you check with a licensed electrician before attempting to wire it.

Accuracy and Precision The resolution per axis is variable as you can change the driver's microstepping, but I typically set the parameters so that the mechanical and digital combination configuration yields greater than 1000 steps per inch. The x and y axes mechanical systems are based on roller chain which is tensioned. This provides a reduction in backlash, so the precision is very good (repeatability). The accuracy is generally based on how well the machine in calibrated and squared. Squaring is very simple as the gantry is squared by a combination of adjusting the roller chain sprockets on each side of the gantry and the adjustment of the gantry back hardware. Once the machine is squared and in a relaxed state, the hardware is tightened to maintain square permanently. Calibration is done through software and is as accurate as the physical measurement system is.

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Replacement parts for the greenBull 6X

Still running a greenBull 6X? These are the wear parts owners replace most often:

• 1/2" Anti-Backlash Nut (2-pack)
• 1/2" Lead Screw — cut to the length your machine needs
• 1/2" Bearings
• Flexible Coupling Set — pick hubs to match your motor shaft

Upgrading the electronics? PoKeys57CNC or Ethernet SmoothStepper, with Mach3 or Mach4.