The maximum length we can ship is a total of 78" inches. However we can send your required length in portions. Please refer to adding the total items you require to your cart to get a visualized amount and shipping cost.

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Regarding 1/2" 5 start and 10 TPI ACME precision lead screw, what the maximum length you can ship within USA? I'm looking for something like 100" and I could use a 1" screw if available. Please include estimated price. Thanks.

Please refer to the Spindle wiring diagram found on the product page for the 2.2KW spindle. The wiring diagram will be the same for the 1.5kW Spindle. The only difference will depend on if you are using 110v or 220v power, as setting PD008 asks you to specify the max voltage.

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please send wiring diagram for the 1500kw spindle and inverter combo. i need to see what additional things need be purchased. thanks.

The leadscrew length for the greenBull long Z-axis is 47 inches.

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BUILDING ONE OF YOUR GREENBULL 6X LONG AND 2.2 KILOWATT SPINDLE DOES NOT FIT. SEEMS LEAD SCREW YOU SENT WITH KIT IS SHORT 42" LOOKS LIKE IT NEEDS TO BE 5 OR 6 INCH LONGER. THIS CORRECT? WHAT THE NEEDED LENGTH FOR UNIT?

Hi. The HIWIN spec rail will fit standard M5 screws. If you are using non standard screws with wide heads, or pan heads that are a bit larger than a standard round heads, then it may not fit. Make sure to source screws that have standard round heads, or socket heads for fastening the 20mm HIWIN spec rails.

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I purchased some of your 20mm Hiwin Linear Rails. M5 bolts do not fit flush. The head stands out. Is the spec sheet out of date? What bolts will fit this rail AND T Nuts compatible with 8020's 15 series extrusions? Thanks.

Conceptually it is straightforward to predict the radiofrequency (RF) exposure intensity at any point in the vicinity of a cellular radio base station antenna. Simply multiply the effective radiation power times the inverse square of the distance times the relative gain of the antenna in the direction of the interest. The relative gain in different directions is know as the antenna radiation pattern and is usually available from the antenna manufacturer in graphical or tabular form.

Unfortunately, in real life the calculations involved in base station antenna evaluations are quite complex and require expert knowledge and experience to deal with the many parameters that are involved. An excellent reference summarizing this process is the Federal Communications Commission OET Bulletin No. 65 titled "Evaluating Compliance With FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields," available on the Federal Communications Commission (FCC) website.

To assess the RF hazards associated with handheld cell phones it is necessary to predict the rate of absorption in the body of radiofrequency energy, a parameter called the specific absorption rate (SAR). This is a very complex calculation, and cell phone manufacturers often rely on measurements of SAR in fluid-filled cylinders or plastic containers in the shape of a head. The FCC requires cell phone manufacturers to provide this data to FCC. You can obtain the data for your model phone on the the FCC's website. Unfortunately only cell phones manufactured in the last couple years are listed here.

As to your question about keeping RF exposures within the safety code, please read the other questions posted on this website this matter. Cellular radio products that meet FCC requirements will be within the guidelines established by safety standards organizations for users' and public exposure to RF radiation fields.

Gary H. Zeman, ScD, CHP

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FIRST OF ALL, THANKS FOR DESIGNING A WONDERFUL SITE. MY QUESTION IS: HOW DO YOU CALCULATE EME (ELECTROMAGNETIC EMISSIONS) AROUND THE TRANSMITTER (ANTENNA) AT ANY GIVEN POINT AND WHAT ARE MEASURES TO KEEP IT UNDER SAFETY CODE?

We recommend our electronics combo for the scratch build kit, which you can find on our site here: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo. This is our standard general purpose 3 axis electronics system, and includes (3) NEMA 24 425 oz-in stepping motors, (3) Drivers (3.0Amp 24-40 Volts, with 1-1/64 microstepping), (1) 36v 8.8a Power Supply, (1) Interface Board either USB or Parallel. (The USB version requires PlanetCNC software; the parallel interface board gives you a variety of options, Mach3 being one popular choice.)

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I got the plans and hardware from you guys and im almost ready for the stepper motor part of this build. what size motors are good to use for this build? the size of cnc will be 2x4 when finish or what size will not work? thanks

Roller chain in general is adjustable by using "master links", which are links which have horseshoe clip holding the pin and thus allow connections to be made or broken. The #25 is a designation of the type of roller chain. ANSI codes designate that the first digit(s) specify the pitch in eights of an inch, and the last digit is 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. So #25 is 2/8 = 1/4 inch pitch bushed chain with no rollers.

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IS THE "#25 ROLLER CHAIN" ADJUSTABLE TO ANY LENGTH? LIKE IF I ORDERED TEN FEET OF IT, CAN MAKE TWO 3-FOOT LOOPS AND ONE 4-FOOT LOOP USING SOME SORT CHAIN JOINER?

Roller chain in general is adjustable by using "master links", which are links which have horseshoe clip holding the pin and thus allow connections to be made or broken. The #25 is a designation of the type of roller chain. ANSI codes designate that the first digit(s) specify the pitch in eights of an inch, and the last digit is 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. So #25 is 2/8 = 1/4 inch pitch bushed chain with no rollers.

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Is the "#25 Roller Chain" adjustable to any length? Like if I ordered ten feet of it, can I make two 3-foot loops and one 4-foot loop using some sort of chain joiner?

I would recommend using a separate 24VDC power supply for the controller. The 24VDC that is connected to the controller is used for delicate input signals and output signals that control external devices. To keep interference and possible current and voltage fluctuations at a minimum due to the motor load, a separate power supply would be best.

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[575] Can the 24VDC supply used for the interface board be the same supply used for stepper drivers, or do you need separate power supplies? If not, does GND and DCM need to be isolated?

Polabs prepared step by step user guide for PoKeys57CNC and Mach4 to try answering such questions. It is available in our downloads section: https://www.poscope.com/wp-content/uploads/downloads/Pokeys/LibrariesAndPlugins/Mach4 and PoKeys57CNC - step by step guide.pdf

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What is the 24VDC Power requirement for the Pokeys47CNC? 1A, 2A? ...I'm running a separate 36VDC PS to the Stepper drivers and a 24VDC PS to the Controller.

The leadscrew length for the greenBull long Z-axis is 47 inches.

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Building one of your greenBull 6X Long and 2.2 kilowatt spindle does not fit. Seems lead screw you sent with kit is short 42" looks like it needs to be 5 or 6 inch longer. Is this correct? What is the needed length of lead screw for this unit?

CAD drawings are not furnished with the purchase of a machine.

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I have a greenbull 5x Long Z. I thought I read that I would get the CAD files to the machine when I purchased it? I want to make a couple modifications. Thanks!

The Honeywell brand goggles meet ANSI certification Z136.1, relating to the safe use of lasers, and are calibrated to optimally block the specific wavelengths of light produced by CO2 lasers (the details are available in the website description here: https://buildyourcnc.com/item/laser-components-goggles-safety-honeywell.) The generic tinted goggles also block the specific CO2 laser wavelengths, but a good deal of other wavelengths as well. That and frame style variation is the basic difference.

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I was wondering what was the difference between the two pair of goggles you are selling for the blacktooth. The tinted laser goggles and the Honeywell laser CO2 goggles

Our electronics contains a switchable power supply that allows you to switch the input mains voltage between 115 volts (110/120) and 230 volts (220/240). the hertx range is not specified, but there are capacitors to smooth out standard frequencies to enable DC output.

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hi, what about, if I buy from you some elecronic parts like (3 Axis Electronics Combo) and I use them here in france , where the electric voltage is 220V 50Hertz ? thats gonna works? thanks

https://buildyourcnc.com/Item/electronicsAndMotors-electronic-component-e-stop-button-switch-safety#prettyPhoto/0/

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How do I wire up multiple E-stop to breakout board, does each E-stop need there own pin? If not since there are only 4 screws on stop 2 for no and 2 for nc do you just splice the wires together if your only using 1 pin? Thanks

Yes, if you want a laser on the machine, I would highly suggest that the laser be mounted on a separate gantry, similar to the following image:
https://buildyourcnc.com/images/machineConfigurations/greenBullV2_size_04x08_angle_flat_f1_no4thaxis_f2_wilasergantry_f3_nolaser_f4_wilaserready_.png

You would need to develop the gantry structure, but you can use this thread to work out the design with my guidance.

You will need a laser tube, laser power supply, laser controller, mirrors, mirror mounts, lens and nozzle. You will also need some mechanical parts and some motors, drivers and power supplies for the drivers and the controller.

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Yes, if you want a laser on the machine, I would highly suggest that the laser be mounted on a separate gantry, similar to the following image:
https://buildyourcnc.com/images/machineConfigurations/greenBullV2_size_04x08_angle_flat_f1_no4thaxis_f2_wilasergantry_f3_nolaser_f4_wilaserready_.png

You would need to develop the gantry structure, but you can use this thread to work out the design with my guidance.

You will need a laser tube, laser power supply, laser controller, mirrors, mirror mounts, lens and nozzle. You will also need some mechanical parts and some motors, drivers and power supplies for the drivers and the controller.

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I'm interested in getting the CO2 laser & Spindle for my Blackfoot - I currently have just the router mount. Do you sell complete kits or can you advise on what I need? Thank you

Yes, if you want a laser on the machine, I would highly suggest that the laser be mounted on a separate gantry, similar to the following image:
https://buildyourcnc.com/images/machineConfigurations/greenBullV2_size_04x08_angle_flat_f1_no4thaxis_f2_wilasergantry_f3_nolaser_f4_wilaserready_.png

You would need to develop the gantry structure, but you can use this thread to work out the design with my guidance.

You will need a laser tube, laser power supply, laser controller, mirrors, mirror mounts, lens, and nozzle. You will also need some mechanical parts and some motors, drivers, and power supplies for the drivers and the controller.

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I'm interested in getting the CO2 laser & Spindle for my Blackfoot - I currently have just the router mount. Do you sell complete kits or can you advise on what I need? Thank you

The settings that will have to be change will be your steps per inch in motor tuning (mach 3), or settings/axes(planetCNC). But we do not have the actual numbers/specs that will fit your 10 TPI 5 start lead screw, here is a tutorial video which explains how to get the exact numbers you need! (

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I just changed my X and Y to the ACME 1/2" 5 start lead screw. What are the motor tuning numbers. I have the book built machine.

The blackFoot uses the same electronics and motors as the blackToe (2'x4') machine. The only parts that change are the gantry horizontal structural parts which may be relatively easy for you to change. We can send you those parts if you are interested in a smaller unit.

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I have a Blackfoot that was purchased in 2017, after the purchase we moved and I haven’t been able to find room for it... would you be interested in buying it back or trading for something smaller. The Blackfoot and computer have never run but I did purchase it assembled. Thanks in advance, scott