We are toying with the idea of re-introducing plans for some of our machines. Please give us a call to discuss further.

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Hi, I am very interested in this CNC Router unit [4'x8'], but from South Africa with our exchange rat [1$ =13,4 ZAR presently, make these kits out of reach. The plans part has been discontinued, but in our situation, would you reconsider and supply full plans and instructions at a cost? please let me know.

Hola puedo venderte una maquina nueva completa chocofrutfc@yahoo.es

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Hi, I’m purchasing an ox build workbee cnc router from China but I need to purchase the spindle mount, router and all cables/wires. Please can you give a list and quote of what I will need? I am purchasing the electrical pack with it but it doesn’t come with the cables and all other bits I need. Thank tou

There is some variation in the outward appearance of laser power supplies due to sourcing through different vendors. However, the basic wiring requirements are the same in each case. For the unit with integrated laser controller, follow the diagram found here: https://buildyourcnc.com/blackToothLaserCutterAndEngraver.aspx#prettyPhoto/0/. The terminals on the signal side will have a 6 connection terminal block -- these are the ones labeled 5V, IN, G, P (or WP), L (or TTL-L), and H (or TTL-H). The High Power side will have 3 inputs for AC power, one high voltage lead, and one return line. Connect these as shown in the diagram as well: the return line goes on the "front" (beam exit end) terminal of the laser tube, the high voltage lead goes to the "back" terminal of the tube, the FG terminal (or G) receives the earth ground wire of the AC power cable, and the two AC terminals receive the line and neutral wires of the AC power cable (it doesn't matter in this case which wire goes to which terminal).

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I purchased the blackTooth Laser Engraver with integrated Laser Control Unit and have been following your instructions. I noticed that the laser tube power supply is different that what is shown in your instructions. Do you have any better wiring guides that I can follow for the version that I received?

Dealing with a 4' x 12' machine, our blackFoot kit will be your best option. Since our machines are only limited to the width but not length wise, you can add however much extra rail and roller chain to accommodate your extended length. Now adding our 4th axis kit (https://www.buildyourcnc.com/item/axes-4th) will be needed for your 4th axis (unless custom design is required).

These items will be the best requirements to build a 4' x 12' 4th axis machine.
Machine (either parallel/USB BoB): https://www.buildyourcnc.com/blackFoot48v40.aspx
4th axis: https://www.buildyourcnc.com/item/axes-4th

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I am looking to set up a long table, 4 x 12 foot I would need to cut wood of modest density less than 1 inch thick, and I would also need to bevel some of the cuts, so I think this is a four axis unit. Which of your kits plus upgrades would make sense? I am very capable of assembly of a bunch of boxes full of parts.

You will need to look for the parameter that controls the run frequency. The frequency can be controlled bu the panel, external terminals, or the RS485 TX/RX terminals (UART protocol). You will want to change that parameter so it uses the panel. If you are referring to the maximum panel dial frequency is only allowing 200-300 rpm, then look for the parameters to control the frequency.

For 200 RPM:
Hz = 200/60 = 3.33 Hz

For 300 RPM:
Hz = 300/60 = 5 Hz

Conversion to RPM:
If you ever find yourself yearning to reverse-engineer the process, the formula is as follows:

RPM = Hz × 60

Look for values that match somewhere between 3 and 5 in your frequency parameters and replace them with 400 to give you 24,000 RPM max.

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[77] Hello. I’m interested in buying a water cooled spindle and VFD. I have an Avid Pro CNC and would love to control it using Mach 4 but I keep hearing it’s difficult to integrate. Also, is the water pump 120 or 240? I’d love any advice etc. eBay is a web of confusion with all of the options. Thank you.

You can do raster and vector engraving on the greenBull laser/spindle combination. The methods of this process is not accomplished in the same way as the typical laser machines where CorelDRAW is used. The Mach3 laser plug-in can be used for the raster engraving and standard CNC g-code can be used for vector cutting and engraving.

The raster method will not be fast on the greenBull since the z-axis is heavy and there are inertial limitation on doing fast raster back and forth movement. Vector is the best use of this machine.

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I am looking at purchasing the greenbull 5X system with the laser/spindle combination. Can the laser do both rastered engraving as well as vectored cutting with the same breakout board and software? If I have this wrong please let me know what would be needed to accompish this.

We may be able to source those motors. Curious, the 6000 oz-in motor is pretty big. Do you mind explaining the application of the CNC machine and the structure that would require the large motor?

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The largest motors we can offer is 3900 oz-in without any mechanical help. 6000 oz-in can be resolved by mechanical means as an alternative.

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I am converting a 12x36 lathe over to CNC, I am interested in a 2 axis kit. I would love one stepper motor to be no smaller than 1200oz. , and another at 6000z. Is this something that you could offer? I have two other cnc machines but this is my first converstion on my own.

can not get the limit switches to work on the usb controller board

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Wiring the motors to the drivers for our 8 wire motor is probably the 425 oz-in NEMA 24 stepping motor. Here is the URL for the diagram of the motor:
https://www.buildyourcnc.com/Documents/PN.SM60HT86-2008BF-U%20(inhouse%20PN.60BYGH303-13)%20(1).pdf

Wire it in bipolar parallel as specified on the data sheet.

Here is the URL for the motor to check if it is the same that you purchased.
https://www.buildyourcnc.com/item/electronicsAndMotors-nema24-425ozin

The USB mach3 board URL is here:
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

The wiring diagram is on that page and instruction on how to use it.

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I recently purchased the 3 axis mach3 usb kit the motors have 8 different colored wires (no stripes on wire just solid color) all instructions have different colors. cannot find tutorals. does the mach 3 hook up same as planet? please let me know where I can find wiring diagram to hook up mach 3 usb BOB and motors (I am new to this kind of work projects)

If you would like to come to the office, please call the office at 281-815-7701 to request a visit at your specified time within our business hours so we can make sure that the right person will be there to assist you.

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I am considering the purchase of a Black foot or Green Bull CNC router and would like to come and visit your facility to see them in person and to discuss my requirements. Please can you tell me your address. I am based in NW Houston. Many thanks.

Hi, you can call me at the 281-815-7701 number. Please leave a message when you call as most of the calls are screened to avoid scam calls. You can also email me at customerservice@buildyourcnc.com or phooddaniel@berkeley.edu.

The newer kits that are featured on the home page include everything you need except a computer and software. The legacy CNC routers that are located in the CNC machines menu selection include all of the parts for the gantry, but you will need to build the table yourself. All of the information on the measurements to be followed for the table construction are on the machine pages.

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I am looking at getting a 4x8 cnc router kit. I am having a hard time figuring out what is included in the kit and what else i will need to buy with it to get off the ground and running. Is there someone i could talk to to walk me through it? If not, can you break down what all I need to go from scratch to a running set up? thanks

You can find the wiring diagrams for the blackTooth on step 105 and 106 on the list of instructions on the blackTooth page. Step 105 pertains to the parallel breakout board and step 106 pertains to the USB interface board.

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wire size

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Hello - I am having trouble understanding the instructions for the wiring of the Blacktooth CNC machine, especially the last sentence in instruction 2. Is there a circuit diagram somewhere? Another part of the instructions refers to a wiring diagram at the "end of the instructions". I can't seem to find this. Hope you can help...cheers

That order did not show up in our system. We searched and found it in our PayPal activity. We are sending it today. My apologies for this.

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I received my order, thank you. However the collet nut will not fit my Porter Cable 690, the threads are too coarse. Can you please send the correct nut, and I will return the wrong nut.
Thank you,
Tom

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I believe the wrench is different also.

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Ok. I will send the correct wrench and collet nut.

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It’s Monday 11-16, and I have not received the nut and wrench. Have you shipped it yet?

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Let me check.

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The set of collets and nut/spanner came straight from the supplier PreciseBits. I am working to understand what went wrong and get it resolved.

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Do you have any new info on the status?

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It’s now Dec 2nd, I ordered this on Oct 7th. No resolution yet! Still waiting, Not very happy.

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I ordered a collet set for a Porter Cable router on 10/7, my card was charged on 10/8. I have not heard anything from you as to when it would ship, or even a confirmation of the order. Please let me know the status.

Yes, you can connect a THC, Torch Height Controller, with the Mach3 USB controller. The THC uses the inputs to determine if the z axis needs to move up or down according to the arc of the plasma torch. The THC connects its outputs to the inputs of the controller so the controller will be informed of the states of the plasma torch.

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I am interested in using the Mach3 USB interface board. I was wondering if there was a way to run a torch height controller with this board for use with a plasma cutter, and if so do you know of any THCs that will work. Thank you.

We attempt to provide as many services as possible to fit the needs of the CNC community. For a quote on a custom job, please email customerservice@buildyourcnc.com and we will be happy to assist you.

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I bought longs motor nema 34 stepper motor with 4 powers supply and dm860 from ebay, would you be interested in doing all the wiring for me? I pay you for you time

Please contact us at sales@buildyourcnc.com so we can provide you with assistance on your order

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I am trying to purchase a kit for our school in Singapore, and your site keeps refusing our corporate AMEX card. Can you help us figure out what is up with that? Are you not ship to Singapore or something? Our AMEX rep says that the account is authorised for this purchase from our end, so the problem may be with your site? Please advise.

Yes, if the power supplies were supplied by us, we will exchange them with 110v equivalent power supplies.

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Hello, I am a student working on a CO2 laser. We recently ordered two 40watt CO2 laser tubes and two 40 Watt CO2 Laser Tube Power Supply at 220V. However, our school is unable to use them due to being 220v. Is it possible to exchange these for the 110v supply, or is there a way we can go about connecting it at 110v instead of 220v? Thank you.

There are two main questions that we can answer with respect to motor torque and the mechanical advantage of lead screws, 1) What torque motor do you need to lift a particular weight, or 2) What maximum weight will my motor torque be able to lift.

This formula uses Newtons (N) as it's final unit. Use this with the included radius (R) to determine the torque. Newtons can easily be converted to lbs or ounces using online conversions.

Effort = Sf + (Load/(2 x pi x (R/p) x Se))

where:
p = pitch of the screw
Se = screw efficiency = Standard lead screw will be between 20% (.2) and 40% (.4)
Sf = static force. This is the force that is needed to start the movement. The number may be eliminated, but it is good to use a number in the 5 N to 20 N range.
Load = the expected load that the effort will need to carry (i.e., the router and the included axis assembly that the motor will need to lift)
R = radius of the lead screw


This formula is based on the "law of the machine"

The final effort amount with its unit of newtons and R will be the torque. For example, if the effort comes to 100 N (newtons) and the R is .5 inches, then you can assume that the effort is 50 N-in since it would take twice the effort to turn form the one inch mark from the center of the shaft.

Example:

Load = 90 N (20.2 lbs)
R = 1 inch since that is the length from the center of the shaft that the motor is rated
p = 1 inch / 13 = .08 inches

Effort = 5 N + (90 N / (2 x 3.14 x (1 / .08) x .2))
Effort = 5 N + (90 N / (6.28 x 12.5 x .2))
Effort = 5 N + (90 N / (15.7))
Effort = 5 N + (5.73 N)
Effort = 10.7 N = 2.4 lbs = 38.4 oz-in

I am putting the oz-in on the end because the formula considers the distance from the center of the shaft to be one inch.

Therefore, a 425 oz-in motor would be able to lift a 20.2 lb Router with its accompanying assembly. If the assembly and router is heavier, plug in the numbers and determine the effort required.

With a bit of algebra, the formula can be rewritten to find the load:

Load = (Effort - Sf) x (2 x pi x (R/p) x Se)

Another formula that does not consider friction at all:

Effort = (Load x p) / (2 x pi x R)

Lets see if we get similar results:

Effort = (20 lb x .08 inches) / (2 x 3.14 x 1)
Effort = 1.6 / 6.28 = .255 lbs = 4.08 oz-in

The results from both formulas appear to be very small because a 13 TPI screw will have enormous mechanical advantage.

It is evident that the first formula that does consider friction that we are loosely estimating is far more conservative than the second formula. Either way, even the most conservative formula shows that the 425 oz-in motor will handle very large weights. If you are using a lead screw with only two turns per inch, .5 inch pitch, you can determine the requirements with the first formula.

Example for a 10 TPI 5 start (2 turns per inch) lead screw:

Load = 90 N (20.2 lbs)
R = 1 inch since that is the length from the center of the shaft that the motor is rated
p = 1 inch / 2 = .5 inches

Effort = 5 N + (90 N / (2 x 3.14 x (1 / .5) x .2))
Effort = 5 N + (90 N / (6.28 x 2 x .2))
Effort = 5 N + (90 N / (2.512))
Effort = 5 N + (35.83 N)
Effort = 40.828 N = 9.18 lbs = 146.88 oz-in

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thank you so much

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how do i calculate torque of stepper motor if lead screw coupled to motor shaft and load applied by lead screw on plate is 100 kg by vertically

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Pls


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1m 16mmdiameter ball screws calculations


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What is the max load that 2 NEMA 17 stepper motors (spaced 2 feet apart, both will be pushing up on the same gantry) can lift while using a rod with the following specifications T8 OD 8mm Pitch 2mm Lead 4mm for each motor.

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thank you for the reply. I would be really good to know the calculation. The lead screw is 1/2" diameter with 13 TPI. Please provide the calculation for determing the maximum weight motor can handle on Z-axis on book build cnc. And one more question. If I am cutting 18mm MDF with 6mm cutting bit (so 6mm pass), what can be the maximum speed rate of cutting and spindle speed of router? thank you

Fusion 360 is a program that allows you to design in a parametric 3 dimensional environment and also provides a great CAM toolset. Fusion 360 will produce the gcode with the CAM capabilities. The gcode is used to move the machine in various ways in order to mill the material; however, software is needed to interpret this gcode and cause the machine to move according to the gcode instructions. This is called control software. So Fusion is CAD/CAM, and you still need "control". Mach3 is one example of control software for milling and is highly recommended.

Install Mach3 onto the computer that will connect to the redFly(CNC electronics), then configure the Mach3 parameters for the machine (motor tuning, plug-ins, inputs/output, etc.). Home the machine, load the gcode into Mach3 and the machine will move according to the gcode.

A word of caution, since you are new to CNC machines, make sure you familiar yourself with the machine and the movements of the machine specific to how the gcode is arranged with respect to the coordinates of the machine. Try with very simple gcode until you get a very good understanding of how the machine will move.

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Hello, My friend has purchased the Redfly and I am helping him a little with it. We are both very new to CNC. I am using fusion 360 at the moment. This can tool path and create gcode. I was wondering if Mach 3 or similar is still needed. Is there a tutorial you could point me to that explains how to get the Gcode from the PC, via Serial to the Redfly?

The Mach3 USB interface board requires 24V relays externally. There are no relays on the mach3 usb board. If you use an external relay on the mach3 usb board, the relay connects to the V+ which is 24V and the output pin is the return.

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I understand what you are saying. Does your relay board work with the Mach3 USB board? If not, what relay board do you suggest to work with this usb controller?

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Our relay board works with our parallel breakout board. An off the shelf SSR (Solid State Relay) made for 24V should work fine.

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I have your Mach3 usb interface board and am interested in the relay board to turn plasma torch on/off. I have a different relay board that doesn't work, it needs 0/5v from output pin to trigger and the usb board doesn't put out 5 volts. Does this relay board need 5v on output or will work fine with this usb controller?