The greenBull CNC machine kit can cut as thick as a material as you desire depending on the reach of the end mill that you provide the machine, if it is a straight vertical. The reason for this is that each pass is incremental (multiple passes at a certain depth per pass). For instance, if you need to cut a 2 inch thick piece of wood, you can make, say 3/4" passes until the target depth of 2 inches is met.

The depth per pass, feedrate and RPM will be determined by the material: wood, plastic, metal and will also be determined by the end mill that is used for that material. Selecting the appropriate end mill is very important. Feedrate and RPM is important to make sure the end mill is as cool as it can be during the cutting process.

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How thick can the Greenbull cut and what kind of material? Wood, plastic, steel? I was also wondering if there is one anywhere in Nevada, Idaho or Utah that I could possibly see in action. Thanks

If you are referring to aligning the rails so that the rails are perfectly parallel:

It is important to make sure one rail (a rail at one side of the table) is perfectly aligned first. Do this by fastening one end of the rail to the table (flush with the table edge), then fasten the other end (flush with the table edge). The rail may not be perfectly straight at this point, but that's ok. This process includes the top and bottom rail, fastening and positioning simultaneously.

You are going to fasten the midpoint of the rail. Get a clamp ready so that you can freeze the rail in place. Look down the rail from one end. This is a good way to determine if the rail has a curve, or is straight. If there is a curve, move the rail midpoint laterally until the rail is straight while looking down the rail from one end of the rail. This may take a couple of people to do, one looks down the rail, the other moves it slightly until it is straight and then clamps the rail. Drill and fasten the midpoint when satisfied. Repeat this process, fastening at the midpoint between screws.

Now place the gantry on the table with the v-groove bearings resting on the one rail side. Add the next rail to the other side of the table. Position the rail so that it is directly under the other bearings. Make sure the gantry is at the extreme end and fasten the rail at that end. Move the gantry along the and fasten the rail as you move the gantry so the rail auto-positions itself.

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Thanks for your answer. So the next step is making certain that the gantry is exactly perpendicular to the x axis. Do you just place a square on the rail and adjust one or both chains as needed?

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Is there a specific process for aligning the x axis on the greenbull? There is mention of it at the end either the rail or gantry installation but I could not find it anywhere.

Yes, we will provide one on the website (4/10/2014).

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The blue insert on my laser cutter nozzle broke during install. Is there anywhere I can find a replacement.

The mach3 control software will work with all major CAM software (CAMBAM, Aspire and Vectric, BobCAD/CAM, ArtCAM, Dolphin CAM, CAM software that integrate with SolidWorks and AutoDesk Inventor, and many more).

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Is there any other software that will work with your controller Mach3?

The kits on eBay are generally older versions of the machine kits that came with less options.

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I notice your kits cost about 25% more than the same kit on ebay, is there a difference in quality or some other feature of your kits?

If you are located near Houston, Texas area you can stop by our shop. If you are not near us, you can check in our forums, and see if you can find someone in your area that has one of our machines, and would be willing to let you come see it in action.

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I WOULD LIKE TO KNOW IF THERE IS A STORE OR SHOP WHERE CAN SEE THE PRODUCT AND BUY IT?

You can determine if the area 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.

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WAS WONDERING IF YOU COULD TELL ME WHETHER OR NOT SHIP ANY OF YOUR KIT PRODUCTS TO THE UK?

If you would like to see a machine in action, you can go to the forum and make a request in the buildyourtools.com forum.

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I am interested in the blacktoe but want to see on in operarion personally. is there one in lower Michigan. I live in Hillsdale Michigan area.

The USB interface only works with momentary switches unfortunately. If you have extensive knowledge of digital electronics, you can apply a receiver that uses a microcontroller and a transmitter with another microcontroller that produces the pulsing signal with the controls that you need.

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I would like to make a handheld remote for the USB CNC Board using a joystick instead of momentary switches. Could you suggest one that will work with your board.

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.

The shipping times are determined by the service you select in the shopping cart. If a machine is purchased, we generally have a one week lead time unless otherwise stated in the description of the machine's product page.

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I want to buy your product, could you shipping to other country (I'm in Indonesia)?

Torque is measured from the center of the shaft to the pitch diameter divided by 2 of the sprocket in inches or feet and is able to move (rotate) with a force at this measurement tangential to the pitch diameter circle. The smaller this pitch diameter is, the less torque is required by the motor to turn the sprocket under load. If you are starting with a large sprocket, say with a pitch diameter of 5 inches (2.5 inches radius), it is easy to reduce the size of the drive sprocket to increase the mechanical advantage. All you need to do is take the 2.5 inches and divide that by 3 to find the new pitch radius.

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[107] What size gear could I add to your #25 design to increase torque by around 3x?

TIR specifications for the ER-20 collet used on 2.2KW Spindles is .0004 inches.

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Hi, I'm considering buying one of your 2.2 KW water cooled spindles. What is these spindles run out ?

Sure, come on by! You can come and see some of our machines in action; pose difficult questions and hopefully we can answer them; and even have some tests done with stuff you bring.

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I am in Houston. I will use this to make cabinets. Do you have a location I could see one in use cutting similar products?

You can track your shipment by logging into your account and clicking on the "[My Account]" link at the top of the page. You will see the items that you purchased and if shipped, will provide the tracking number so you can track the package.

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Hello I was wondering if you could track your shipment? If you can’t could you give me an estimation of when it will come.

http://buildyourcnc.com/PrimeronHomingandLimitSwitches.aspx
There is a pin setting in Mach3 that says how to react to the inputs from the switches. Your setting is probably wrong as the trigger happens immediately.

You may want to think about shielded wire and/or a resistor on each limit switch line. If there are stray wires, connect them to ground. Additionally, the shield from the shielded cable insulation should alse connected to ground at both ends.
Try upping the Debounce interval in Mach3. You have to adjust the debounce interval. You go to config,general config, and it is in the top right corner. I set mine to 100 and it seems to work well.

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how to solution cnc revo 540 limit tripped error?


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My limit switches keep tripping a reset. Wiring all seems right. Could there be another cause I can check?

A standard water pump like this one will work: https://www.buildyourcnc.com/item/pneumatic-hydraulic-water-pump-370-Gallons-Per-Hour-220v-110v

You will also need silicone tubing at 1/4" ID and 3/8" OD to connect from the pump to the spindle: https://www.buildyourcnc.com/Item/pneumatic-hydraulic-silicone-tubing

And a bucket to hold the water.

You may also consider CPU cooling systems which can actually be fastened to the back of the gantry. We do this for the Fabricator Pro machine. The CPU cooling I would recommend is a small pump and cylinder with a heat sink, or a small radiator.

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Is there a recommended cooling system for purchase that can be used with your 2.2 kW water cooled spindles?

The use of the hex inverter in the application to invert a direction signal to have a motor run in the reverse directions is relatively simple.

First, go to this link and look at the chip diagram:
https://www.buildyourcnc.com/item/electronicsAndMotors-hex-inverter-breakout-newbiehack-integrated_circuits-hex-inverter

Connect 5V from the USB interface tothe VCC pin. The pin on the keyboard jog header can be used. Connect the GND pin from the USB interface to the GND pin on the hex inverter. Connect the CW terminal from the USB interface to the 1A pin on the hex inverter. Connect the 1Y pin from the hex inverter to the driver.

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I got a question??? I am a dummy when it comes to cnc. I got 6040 1500kw water cold engraver 3 axis from china. I can not get anything out of them pertaining help they keep telling me the same thing over and over and over and I'm doing it and send them pictures that I know. Anyway email me a wiring diagram for the PRT 1500 watt spindle motor control box and has the emergency stop on and off switch manual PC and of course yhe screanm fultonsbusiness@gmail.com

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I got a question??? I am a dummy when it comes to cnc. I got 6040 1500kw water cold engraver 3 axis from china. I can not get anything out of them pertaining help they keep telling me the same thing over and over and over and I'm doing it and send them pictures that I know. Anyway email me a wiring diagram for the PRT 1500 watt spindle motor control box and has the emergency stop on and off switch manual PC and of course yhe screanm fultonsbusiness@gmail.com

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Is there a wiring diagram for hooking up your hex inverter between your USB breakout board and the controller?

That is correct, the only manner to get our machines is to buy one of our kits. We do not provide or sell our plans, the only CNC machine you can find on our website will be the scratch build kit and plans which is a 20' x 40' , (https://buildyourcnc.com/Documents/CNC%20Kit%201-1.pdf).

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So the only way to get one of your machines is to buy it already cut, and/or assembled? I can't cut one on my existing machine?

Every Lunar eclipse that falls on the extra leap-year day. When is the next one, exactly? Good question- I'll submit it.

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How often do you guys answer questions? Is there a certain time of the month?