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Question #: 453

Question: WHICH MACHINE SHOULD I BUY, GREENBULL OR BLACKFOOT?

Current Solution

The greenBull can range is routing width sizes of 5 feet and 6 feet. The blackFoot has a 4 foot routing width.

Previous Solution:
The greenBull machine has a sturdier gantry than the blackFoot, so you can be more agressive with the cutting feedrate (cutting speed). The blackFoot is also a good machine, but it all comes down to the speed at which you want to produce the fabrication

The spindle is also highly recommended for it's quietness and easier cleanup (no fan blowing the dust in the air)

Respond:

Other Possible Solutions to this Question

  • WHICH MACHINE SHOULD I BUY, THE GREENBULL OR BLACKFOOT?

    The greenBull can range is routing width sizes of 5 feet and 6 feet. The blackFoot has a 4 foot routing width.

    Previous Solution:
    The greenBull machine has a sturdier gantry than the blackFoot, so you can be more agressive with the cutting feedrate (cutting speed). The blackFoot is also a good machine, but it all comes down to the speed at which you want to produce the fabrication

    The spindle is also highly recommended for it's quietness and easier cleanup (no fan blowing the dust in the air)

    Click the link to respond:
    WHICH MACHINE SHOULD I BUY, THE GREENBULL OR BLACKFOOT?

  • WHICH MACHINE SHOULD I BUY, THE GREENBULL OR BLACKFOOT?

    The greenBull can range is routing width sizes of 5 feet and 6 feet. The blackFoot has a 4 foot routing width.

    Click the link to respond:
    WHICH MACHINE SHOULD I BUY, THE GREENBULL OR BLACKFOOT?

  • SHOULD I SELECT THE GREENBULL OR BLACKFOOT CNC MACHINE?

    The greenBull can range is routing width sizes of 5 feet and 6 feet. The blackFoot has a 4 foot routing width.

    Previous Solution:
    The greenBull machine has a sturdier gantry than the blackFoot, so you can be more agressive with the cutting feedrate (cutting speed). The blackFoot is also a good machine, but it all comes down to the speed at which you want to produce the fabrication

    The spindle is also highly recommended for it's quietness and easier cleanup (no fan blowing the dust in the air)

    Click the link to respond:
    SHOULD I SELECT THE GREENBULL OR BLACKFOOT CNC MACHINE?

  • Can I purchase plans to scratch build the Blackfoot or GreenBull machine

    Unfortunately we no longer include or sell our CNC plans for none of our machines. We will be here to assist you if any parts wear over time, and will be able to replace the parts if needed.

    Charges may be subjected due to time of purchase and cause of wear.

    Click the link to respond:
    Can I purchase plans to scratch build the Blackfoot or GreenBull machine

  • 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.

    Click the link to respond:
    WHAT CABLE LENGTHS SHOULD USE FOR THE BLACKFOOT CNC MACHINE

  • can you ship a greenbull of blackfoot to japan

    You can determine if the country is serviceable by:
    - selecting the items you want to purchase on the website
    - go to the cart (shopping cart top left of any webpage)
    - log in, or register
    - Enter the address and click on calculate shipping.

    The webpage will return the direct rates and whether your area is serviced or not. Feel free to enter any address as long as you are able to receive the package from that address.

    Additional Information:
    I did that and got two options: UPS ($1400) or FEDEX ($3800). Maybe FEDEX is already including the customs fees and import taxes, I don't know. I am afraid of buying it and having problems with customs later. That is why I asked if you guys have ever sent any machine to Brazil just to check if everything went fine with customs.

    Click the link to respond:
    can you ship a greenbull of blackfoot to japan

  • can the greenBull Kit CNC machine cut HDPE Seaboard?

    The greenBull can cut HDPE Seaboard, and other materials as well. The machine will be cutting with either a router/spindle(customer preference) and will be the greatest aspect of actual cutting of material, to get a good overall coverage of materials. Our 2.2kW spindle will be the best option for a large variety of materials.

    Click the link to respond:
    can the greenBull Kit CNC machine cut HDPE Seaboard?

  • Is a dust extraction system included as part of the CNC kit (BlackFoot and GreenBull)?

    All our machines are implemented with a dust collection system, includes holders for vacuum hose, and a brush piece that will fit your motor mount to hold as much wood/aluminum/plexi-glass particles in as possible. No vacuum is provided, must be purchased separately.

    Click the link to respond:
    Is a dust extraction system included as part of the CNC kit (BlackFoot and GreenBull)?

  • WHAT MATERIALS CAN THE GREENBULL MACHINE CUT? LASER ETCH?

    The Greenbull machine can cut a very wide variety of materials ranging from foam to aluminum. We recommend the use of our 2.2kW spindle to allow the greatest flexibility. Aside from that, the most important thing is to use an appropriate end mill for the material you are cutting and to use appropriate speeds and feed rates.



    BYCNC Response:
    Our 40W laser can cut up to about 1/4" materials ranging from wood and acrylic down through lighter materials such as leather, fabric, foam, etc. Speed and final cut are greatly enhanced by an air assist upgrade. We also offer an 80W laser which has approximately twice the capabilities of the 40W.

    Click the link to respond:
    WHAT MATERIALS CAN THE GREENBULL MACHINE CUT? LASER ETCH?

  • I can't spot the differences between 4'x8' blackFoot and the 4'x8' greenBull (except for laser head option): please, can you tell me?

    Only our greenBull CNC machines will be able to use the long Z-axis, due to structural construction of the greenBull over the blackFoot.
    The height from the table top to the bottom of the gantry is: 4.25"

    Both the maximum cutting height and diameter, will be dependent on the specific end mill/router bit you plan on using, since they can vary in length.
    The maximum cutting height (useful to engrave or cut material)is: with spoil-board 3.875", without a spoil-board is 4.625"
    The maximum diameter will (estimated) is: 3"

    Specifically dealing with our greenBull long Z-axis CNC machines, depending on how you specifically design the table you can have more cutting height and a larger diameter clearance. If you only create a frame for the machine with a hollow center(adjustable midsection), allowing you to have a greater clearance.
    Similar table image here: (https://buildyourcnc.com/Item/cnc-machine-greenBull-v4-6X#prettyPhoto/5/)

    Click the link to respond:
    I can't spot the differences between 4'x8' blackFoot and the 4'x8' greenBull (except for laser head option): please, can you tell me?

  • BlackFoot CNC: Where should z-axis limit switches be placed?

    The limit switch for the z-axis should be placed in a location where nothing can interfere with CNC process, now for our blackFoot, referring to step 115(https://www.buildyourcnc.com/blackFoot48v40.aspx#prettyPhoto/120/) it will be placed 1-1/4"(may be adjusted) down from the top wood piece(vacuum holder). So contact will be made from the location of the anti-backlash nut wood piece and the limit switch stopping it from going to high.

    Click the link to respond:
    BlackFoot CNC: Where should z-axis limit switches be placed?

  • IT OK TO USE THICKER PLYWOOD (MATERIAL) BUILD THE CNC MACHINE, BLACKFOOT, BLACKTOE?

    Yes, it is ok if the thickness is plus or minus +/- about 2mm.

    Click the link to respond:
    IT OK TO USE THICKER PLYWOOD (MATERIAL) BUILD THE CNC MACHINE, BLACKFOOT, BLACKTOE?

  • Should the machine material (wood like) be painted before assembly?

    Our machines structures is made from MDO, which is used in the construction industry. Specifically in cement forming, which allows the material to be treated and coated for the specific requirements in the field.
    We do recommend painting the structure (everything structure wise besides aluminum) with oil based paints, if you have the machine in a very humid location or location with constant rain. If you do not have the machine in a climate control environment.
    Painting the machine will not give it a longer run time or any specific advantages to the over structure or material. Painting it would be more of a personal choice, in making it specifically orientated to your shop or personality.

    Click the link to respond:
    Should the machine material (wood like) be painted before assembly?

  • is IT OK TO USE THICKER PLYWOOD (MATERIAL) to BUILD THE CNC MACHINE, BLACKFOOT, BLACKTOE?

    Yes, it is ok if the thickness is plus or minus +/- about 2mm.

    Click the link to respond:
    is IT OK TO USE THICKER PLYWOOD (MATERIAL) to BUILD THE CNC MACHINE, BLACKFOOT, BLACKTOE?

  • My blackfoot 4x8 Starts sending erratic commands to the machine randomly in the middle of a program or freezes altogether. Replaced USB Cable, updated software, updated firmware, tried other computers. What else should I do?

    If the computer has been tested to be functional, it is most likely the breakout board which is faulty. Replace the breakout board and it should solve these issues.

    Click the link to respond:
    My blackfoot 4x8 Starts sending erratic commands to the machine randomly in the middle of a program or freezes altogether. Replaced USB Cable, updated software, updated firmware, tried other computers. What else should I do?

  • How should I control a plasma torch, spindle and a laser on my CNC machine?

    It will depend on how you configure the machine to use the Laser and plasma. Is the laser on a separate gantry? That will determine the way you will connect the laser control system or if you use a typical CNC controller. The plasma will need inputs of THC on, THC up, THC down and outputs to trigger the plasma torch. I recommend the Pokeys57CNC for the plasma and you can also fire the laser with it, but you will not be able to do engraving with the laser unless you use a laser controller. If you use a laser controller, you will need to either build circuitry to switch the digital signals from which controller you will be using, or if you have the laser on a separate gantry, you can use a traditional laser controller connected to the stepper motor drivers on that gantry.

    Users response:
    I was planing on using same gantry, and installing plasma and laser module on z axis along the side with current router. Perhaps if it’s needed installing another z axis on current z axis. So that when I use plasma, router z will be homed and plasma z axis will be able to utilize thc.

    When you say “If you use a laser controller, you will need to either build circuitry to switch the digital signals from which controller you will be using,”
    If i install laser controller, pokeys and router motion card, do you mean all ( axis and router/laser/plasma) signals or just the one that controls router/laser/plasma?
    I was wondering if I could jump (parallel connect) axis signals from card to card without ?
    Also do you prefer ethernet card or usb?
    I really do appreciate your help :) thanx again.

    Buildyourcnc response:
    Not a problem at all.

    Remember that with all of that weight on the z-axis, you will not be able to do efficient raster style engraving.

    By putting the laser on another gantry, say at the far end of the table, then you would be able to use a laser controller that controls its own stepper motors and the nozzle can have fast swing motion for engraving. With the laser on the z-axis of the spindle (like see on the greenBull), you will only be able to do vector motions for the laser.

    You can also have a CNC interface and laser controller controlling the same stepper motor drivers, but you will need a few tri-state buffer chips where you can use a toggle switch for which controller has control of the drivers.

    Click the link to respond:
    How should I control a plasma torch, spindle and a laser on my CNC machine?

  • What materials can the Greenbull machine cut? What materials can the laser cut? Can the laser etch?

    The Greenbull machine can cut a very wide variety of materials ranging from foam to aluminum. We recommend the use of our 2.2kW spindle to allow the greatest flexibility. Aside from that, the most important thing is to use an appropriate end mill for the material you are cutting and to use appropriate speeds and feed rates.



    BYCNC Response:
    Our 40W laser can cut up to about 1/4" materials ranging from wood and acrylic down through lighter materials such as leather, fabric, foam, etc. Speed and final cut are greatly enhanced by an air assist upgrade. We also offer an 80W laser which has approximately twice the capabilities of the 40W.

    Click the link to respond:
    What materials can the Greenbull machine cut? What materials can the laser cut? Can the laser etch?

  • What is travel speed of the blackfoot machine ?? I read in a forum somewhere that it's around 100inches/minute. Is that accurate ??

    The jog speed of the blackToe is 1000 - 1500 ipm (inches per minute). I generally set this to about 700 ipm just to be safe and 700 ipm is plenty fast for most scenarios. The cutting speed will depend on the tool (end mill) that you will use for the application, the material being used and whether a spindle or router is used. In a scenario that a spindle is used and cutting relatively hard plywood at 3/4" full depth using an Onsrud 1/4" diameter compression end mill, you can cut at around 100 - 300 ipm. Using a router would be only half the speed and cutting depth due to the poor torque.

    Click the link to respond:
    What is travel speed of the blackfoot machine ?? I read in a forum somewhere that it's around 100inches/minute. Is that accurate ??

  • I'm planning on purchasing a Greenbull 5x (hybrid laser/spindel). What other expenses will I have for having a fully operationel machine

    You will need to make sure you have a 220 volt outlet near the machine. You will need some wire to connect the electronics unless you purchase the redFly, redLear or redSprout plug and play electronics. To maintain cooling for the spindle, you will need some silicone tubing to provide for water exchange within the spindle, a bucket and pump to pump the water. You will need a table built as per the dimensions on the greenBull page:
    https://www.buildyourcnc.com/greenBullCNCMachineKit.aspx

    For cutting material, you will need end mills which are consumables that will be purchased frequently as they wear.

    The pump and silicone can be found here: https://www.buildyourcnc.com/category/pneumatic-hydraulic

    Click the link to respond:
    I'm planning on purchasing a Greenbull 5x (hybrid laser/spindel). What other expenses will I have for having a fully operationel machine

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