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### Question #: 14897

Question: WHAT LENGTHS OF ROLLER CHAIN DO I USE FOR THE GREENBULL 4X CNC?

Current Solution

The roller chain lengths for the greenBull 4x is:
- 13 feet for each side of the X axis (total of 26 feet), and
- 6 feet for the Y-axis

Respond:

### Other Possible Solutions to this Question

• WHAT ARE THE ROLLER CHAIN LENGTHS FOR GREENBULL 4X

The roller chain lengths for the greenBull 4x is:
- 13 feet for each side of the X axis (total of 26 feet), and
- 6 feet for the Y-axis

WHAT ARE THE ROLLER CHAIN LENGTHS FOR GREENBULL 4X

• ROLLER CHAIN LENGTHS FOR GREENBULL 4X

The roller chain lengths for the greenBull 4x is:
- 13 feet for each side of the X axis (total of 26 feet), and
- 6 feet for the Y-axis

ROLLER CHAIN LENGTHS FOR GREENBULL 4X

• WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKFOOT CNC MACHINE

The blackfoot requires a total of 50 feet of cable.

The X axis needs 15 feet
The Y axis needs 17 feet
and the Z-axis needs 18 feet

These are 20 gauge 4 conductor cable.

WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKFOOT CNC MACHINE

• What will be the amount of cable carrier that I will need for a greenBull 5x?

To determine the length of cable carrier you will need for a single axis, measure the axis travel of your machine, divide this by 2 and add 12 inches. The radius of the curl is 2 inches.
The amount of cable carrier needed for the CNC machines that we provide will be:

blueChick: Total 4 Ft

blackToe: Total 5 Ft

blackFoot: Total 8 Ft

greenLean: Total 8 Ft

greenBull 5x: Total 10 Ft

greenBull 6x: Total 11 Ft

What will be the amount of cable carrier that I will need for a greenBull 5x?

• What 1/2" collet and nut do I use for the Greenbull with the 2KW spindle? I want to order the Onsrud Spoilboard surfacing cutter.

For the 2.2kW Spindle you would need the ER20 1/2" Collet.

What 1/2" collet and nut do I use for the Greenbull with the 2KW spindle? I want to order the Onsrud Spoilboard surfacing cutter.

• What do I do if I didnt recieve the y-axis rails, z-axis rails, or the roller chain for my bluechick (rollerchain)?

What do I do if I didnt recieve the y-axis rails, z-axis rails, or the roller chain for my bluechick (rollerchain)?

• What are the table dimensions for the greenBull so I can build it.

Actual table dimension: 4'x8' is 56.078"x 121.50" (the overhang in the illustrations should be 3/4" thick)
To determine the frame dimensions, first consider using the frame height shown of almost 3' (2.86'). The width of the frame should be 4" narrower than the dimension from rail edge to rail edge (6X rail to rail is 80.078"). This will provide a 2" overhang on both sides (4X frame width should be 56.078").
The length of the frame should be 4" shorter than the desired length of the rails to provide a 2" overhang on both ends. The travel length will be 20" shorter than the rail length due to the space occupied by the gantry sides.
Two long pieces of 3/4" material will need to be placed on top of the frame with the 2" overhang on the sides and the end. These long strips of material will receive the rails and the chain mounts on the ends.

https://www.buildyourcnc.com/Item/cnc-machine-greenBull-v4-4X

What are the table dimensions for the greenBull so I can build it.

• Helo. I'm using Meshcam to generate the toolpaths. What type of files should I "save as" for the greenbull CNC using Mach3 with the UC100 USB to Parallel?

The file type to save for use with Mach3 is .tap or .nc. Make sure that you specify Mach3 as the post processor in Meshcam.

Helo. I'm using Meshcam to generate the toolpaths. What type of files should I "save as" for the greenbull CNC using Mach3 with the UC100 USB to Parallel?

• While motor tuning what are the recommended steps per inch, velocity, and acceleration for the GreenBull CNC?

In the customer service live, just enter "motor tuning" and it will give you a list of all the recommended or default settings for our machines. However the acceleration and velocity for the greenBull(other machines) will be an actual determination on your trials. You will want the highest possible acceleration and velocity without the motors stalling, so you can do increments of ten to be on the safe side, if it is too slow try increments of 25.

The steps per inch is dependent on the microstepping:
Steps/Inch for the x and y
Steps = 200 motor steps per revolution x 16 microsteps = 3200 steps
Inches = sprocket number of teeth x pitch of the sprocket = 14 x .25" = 3.5 inches
steps/inch = 3200 / 3.5 = 914.28
This is really a starting point. You will then need to use the mach3 calibration function to get the perfect steps/inch value. Use as long a measurement as possible when calibrating.

Velocity:
Start with a value of 1000 ipm. Increase this value with a relatively low acceleration at about 10. You will notice at a particular velocity that it will stall. This is your stall velocity. I would take the stall velocity and reduce it by about 30% to 50% which should give you a good final safe velocity.

Acceleration:
Once the velocity is found, raise the acceleration until it start to stall at a low velocity. Reduce the acceleration by about the same percentage to stick with a safe acceleration.

The acceleration is mostly dependent on torque (current) and the top speed is dependent on the amount of voltage.

Give some tests with all of the axes running at the same time. If you notice and stalling, reduce velocities and acceleration depending on when the stall happens (top end, or acceleration curve).

X-axis
“CW8060 (6.0A) Driver”
Set to 5.43A, 1/16 Microstep
Dipswitches: 01100110 (“0”=down, “1”=up)
Mach3 Motor Tuning: 914.29 steps/in
Y-axis
“CW8060 (6.0A) Driver”
Set to 5.43A, 1/16 Microstep
Dipswitches: 01100110
Mach3 Motor Tuning: 914.29 steps/in
Z-axis
“CW8060 (6.0A) Driver”
Set to 5.43A, 1/4 Microstep
Dipswitches: 01100100
Mach3 Motor Tuning: 1600 steps/in

4th axis

While motor tuning what are the recommended steps per inch, velocity, and acceleration for the GreenBull CNC?

• WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKTOE

The motor cables for the blackToe are as follows:

Total 30 feet

X - 9
Y - 10
Z - 11

WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKTOE

• WHAT DOES THE GREENBULL KIT INCLUDE AND DO I NEED TO INCLUDE?

The greenBull 4X comes with all of the components and electronics to assemble the gantry of the machine. You will need to build the table. We provide the rails and roller chain for the X-axis (along the length of the table for full 8 feet of travel). You will need to provide some wire to connect the electronics and a computer to run the machine. You will also need to purchase the software that you will need to run the machine that matches how you will apply the machine. We suggest the mach3 control program. The CAM program is up to you as there are many options out there.

WHAT DOES THE GREENBULL KIT INCLUDE AND DO I NEED TO INCLUDE?

• What does the greenBull kit include and what do I need to include?

The greenBull 4X comes with all of the components and electronics to assemble the gantry of the machine. You will need to build the table. We provide the rails and roller chain for the X-axis (along the length of the table for full 8 feet of travel). You will need to provide some wire to connect the electronics and a computer to run the machine. You will also need to purchase the software that you will need to run the machine that matches how you will apply the machine. We suggest the mach3 control program. The CAM program is up to you as there are many options out there.

What does the greenBull kit include and what do I need to include?

• i have a redfly box for a greenbull 5x10 do I need to load a firmware to use planet cnc or is it already done

For our redFly there is no need for firmware, however you will need to purchase a license for the board. Which you can buy here: (http://planet-cnc.com/product/cnc-usb-controller-license/)
The license is to completely unlock the software Planet-CNC.

i have a redfly box for a greenbull 5x10 do I need to load a firmware to use planet cnc or is it already done

• WHAT ARE THE SHIPPING DIMENSIONS FOR GREENBULL?

76" X 40" X 26"
230 LBS

WHAT ARE THE SHIPPING DIMENSIONS FOR GREENBULL?

• ROLLER CHAIN LENGTH GREENBULL

The roller chain lengths for the greenBull 4x is:
- 13 feet for each side of the X axis (total of 26 feet), and
- 6 feet for the Y-axis

ROLLER CHAIN LENGTH GREENBULL

• WHAT ARE THE DIMENSIONS FOR GREENBULL TABLE?

Actual table dimension: 4'x8' is 56.078"x 121.50" (the overhang in the illustrations should be 3/4" thick)
To determine the frame dimensions, first consider using the frame height shown of almost 3' (2.86'). The width of the frame should be 4" narrower than the dimension from rail edge to rail edge (6X rail to rail is 80.078"). This will provide a 2" overhang on both sides (4X frame width should be 56.078").
The length of the frame should be 4" shorter than the desired length of the rails to provide a 2" overhang on both ends. The travel length will be 20" shorter than the rail length due to the space occupied by the gantry sides.
Two long pieces of 3/4" material will need to be placed on top of the frame with the 2" overhang on the sides and the end. These long strips of material will receive the rails and the chain mounts on the ends.

https://www.buildyourcnc.com/Item/cnc-machine-greenBull-v4-4X

WHAT ARE THE DIMENSIONS FOR GREENBULL TABLE?

• Is it possible to get only the plans for the woodpieces for greenbull cnc

The files and hardware option for our machines has been removed from the site due to the following reasons:
Difficulty for the end use of the files and the challenges (and time/money) on our side to assist in using these files.
The abuse of these files over the internet.
Ultimately may reduce the sales of machines keeping us in business.
Sadly, this is what has come out of our company attempting to be open; however, the machines sold on this site is still far lower in price than the competition for the quality that we provide as we have a great desire to engender the cottage industry to fulfill their need for low end manufacturing. My sincere apologies if this causes any inconvenience.

NO, is not possible, I can help with the shipping cost

Is it possible to get only the plans for the woodpieces for greenbull cnc

• Can I run your greenBull CNC off of a generator? If so, what specs would you recommend? Thanks!

If you want to run a greenBull CNC machine using a generator, The generator will need to allow for a minimum amount of current draw. Here is a list of items that draw current and how much current (the list does not include the laser option):

Spindle: 10 amps minimum so plan for more.
The power supply for three motors and drivers: 9 amps
The computer to run the control software: varies but out redleaf system would be a max of 2 or so.

So you are looking at about 21 minimum so you will probably need a 25 amp generator.

Can I run your greenBull CNC off of a generator? If so, what specs would you recommend? Thanks!

• Can I purchase the wood pieces of the GreenBull 6x without any hardware (all gantry "Y", all "Z", and "X" chain end supports)?

That option is not a common request for our machines, we will need to contact you further with specifications on that request for the greenBull.

Email: customerservice@buildyourcnc.com

Can I purchase the wood pieces of the GreenBull 6x without any hardware (all gantry "Y", all "Z", and "X" chain end supports)?

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