No, at this time, we only have this strip brush in 2" bristle measurements. You are the first to request a longer length. If we see more interest, we will get the longer bristle lengths.

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Hi....do you have this: https://buildyourcnc.com/item/strip-brush available in 3" long?

We don't have cad models of the HIWIN blocks, but you can find the models on McMaster.com. They have can drawings and models for most of these types of parts.

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DO YOU HAVE CAD AVAILABLE FOR THE HIWIN GUIDE BLOCKS SELL AND RAIL?

We don't have cad models of the HIWIN blocks, but you can find the models on McMaster.com. They have can drawings and models for most of these types of parts.

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DO YOU HAVE CAD AVAILABLE FOR THE HIWIN GUIDE BLOCKS SELL AND RAIL?

Yes, we have the optional table for the blackToe, but we need to fabricate it, which only takes one day. We generally reserve one week for the total fabrication and packing of all parts.

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DO YOU HAVE BLACKTOE MACHINES WITH TABLES READY TO GO OR HOW LONG DOES IT TAKE MAKE ONE?

That is difficult to tell at this time. Right when we get them in, they go fast. These items come from China and the units are shipped in via freight on ship, so there are many factors on the delivery such as weather.

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When will the 2000 mm HIWIN Spec Linear Guide rail be available?

The eyebolts are used in the squaring of the machine. I would use a standard carpenters square and first run the end mill along the edge of the square to first make it parallel with the long axis. Then run the end mill along the other edge with the short axis and adjust the eye bolts and chain according to the angle that the machine is out of square.

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DO NEED TO SQUARE UP THE MACHINE AND IF SO YOU HAVE INSTRUCTIONS OR VIDEO FOR THIS?

Cutting aluminum is not a problem with our machines, as long as it is acquainted with a decent aluminum end mill and spindle, and the feedrates and speeds are being follow from the manufacture of the end mill.
Now to have a 3" cutting depth, it is possible even up to our smallest machine (blueChick). I would recommend our blackToe due to the fact that you will have a bit of playing room if any other projects or requests might arise.

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Do you have a cnc kit that can cut 2-3" deep aluminum blocks and costs <$3,000?

Check step 9 on this page: http://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay

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IF YOU HAVE CIRCUIT (OR PICTURE) OF HOW THIS RELAY IS CONNECTED TO THE ROUTER

If you are looking for the drivers to pair with NEMA 34 stepper motors, you can find the 6.0 amp drivers here:
https://www.buildyourcnc.com/item/electronicsAndMotors-stepper-driver-6!0a

The other electronics to send the signals to the 6.0 amp drivers (the control board that operates with the control software) is subject to personal preference, but here they are listed:

Our breakout board (works with Mach3 and LinuxCNC and requires a parallel port on your computer):
https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay

The PoKeys57CNC (works with Mach3 and Mach4):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board

Generic USB breakout board (works with Mach3):
https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board

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Do I need a driver for every motor or can I use one driver for all four motors

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Each motor needs its own driver.

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I HAVE NEMA 34 MOTORS BUT NEED THE ELECTRICAL COMPONENTS DO YOU A KIT WITHOUT INCLUDED?

Our CNC machines can be lengthened to work with our customers specific projects.

For a 3.5' x 14' cutting surface, I would recommend our greenBull 4X! (4'x8'). You will only need to add the remaining length of rail(4) and chain(2) to accommodate the additional 6Ft, so this machine will have a cutting surface of 4' x 14'.

The additional lengths for the x-axis travel will be a total of 28Ft, and 14Ft of chain. We recommend selecting all the items you wish to purchase and see the actual total in your cart.

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I HAVE INTEREST IN SOME KIT AROUND 14' X 3.5' CAN YOU SUPPLY? ALREADY PRICE? AND WHAT MORE NEED?, MY IS MODELING KAYAKS CNC

We just don't make enough on our machines to justify any discounts. We try to offer everyone the same low price.

If I can help in another way, please let me know.

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DO YOU HAVE SPECIAL DEALS FOR HACKERSPACES OR NON-PROFIT ORGANIZATIONS?

The motor that is attached to the 4th axis is wired as follows:

The motor should have red, green yellow and blue wires coming form the motor. The red and green are paired as one coil and the yellow and blue is paired as the other coil. You can wire the motor to a 3.0 amp driver with red to A+, green to A-, Yellow to B+ and Blue to B-

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HOW DO I WIRE THE 4TH AXIS THAT YOU SELL. I HAVE MACH3 SOFTWARE. NO INSTRUCTIONS ON YOUR SITE

I can't think of any reason that it would be dangerous. However, I checked with the Cellular Telecommunications Industry Association. The Chairman of the Association sent the following memo on 18 June 1999, to the Associations' Board of Directors and others:
"You may have received inquiries about wireless phones causing fires or explosions at gas stations. In particular, you may have been asked about an alleged explosion at a gas station in Indonesia. We have been unable to verify any such occurrence in Indonesia or anywhere else. Moreover, in our discussions with Shell Oil they have stated they have attempted to verify these reports and also have not been able to document any such occurrence."
Nonetheless, in an abundance of caution, some manufacturers have included language in the owner's manuals for their products that recommends wireless phone users turn off their phones while at refueling points (gas stations). In addition, we have received information that Exxon will begin issuing warning signs at all domestic gas stations advising drivers to turn off all wireless communications devices when entering Exxon gas stations.

While wireless phone owners should always consult their owner's manual for information on the use of the phone, we are not aware of any incident that would justify these concerns."

Gen Roessler, Editor
HPS website

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WHY IT DANGEROUS TO HAVE YOUR MOBILE PHONE IN OPERATION DURING REFUELING AT A GAS STATION?

I haven't delved into using encoders with stepping motors too much. From my research, you need to have a controller that can provide the closed loop control, rather than software handling that process. I have also found from my research that using encoders on stepping motors is generally used to stop the machine in the case that the motor failed to achieve the commanded position for some reason and gives the user the chance to correct and continue with the job.

If you want proper closed loop control, it may be best to go with servos and servo controller that provide the closed loop control within the real of those two components.

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I HAVE NOT SEEN ANY REFERENCES TO ENCODER FEED-BACK CAPABILITY IN OF THE HARDWARE YOU SELL. THIS A SUPPORTED FEATURE WITH HARDWARE/SOFTWARE SELL?

These machines are inherently dangerous. Before the machine moves, the machine should be clear of any person by a dimension of at the distance of a persons reach plus a few more feet. This is the policies we institute in our shop and what is recommend to all of our customers. Treat these machines as you would treat any major power tool in the shop.

With that said, you can certainly add some protective parts, but still keep folks away even with those installed. I would use the gantry side to do all of the mounting of the protective parts. Consider using sheet metal that you can bend and make a simple installation right on the gantry side.

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THE CNC MACHINE IS UNSAFE WITH EXPOSED SPROCKETS THAT CAN DAMAGE FINGERS AND HAVE CLOTHING CAUGHT IN IT.

Yes, the CNC machine hardware and plans combo is the same machine as in the book. The machine that we provide the plans for, can be found on the website, here http://buildyourcnc.com/Item/cnc-machine-scratchbuild

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IS THE CNC MACHINE HARDWARE & PLANS COMBO SHOWN AT LINK YOU LISTED SAME DESCRIBED IN BOOK?

The Federal Communications Commission (FCC) is the primary federal agency responsible for safety aspects of modern-day wireless telecommunications systems. The FCC's Internet address is shown below. Recently FCC published an excellent report, cited below, to assist citizens and local governments dealing with siting of telecommuncations towers. This report contains charts and figures describing the characteristics and performance of telecommunications antennas. The report also contains practical guidance on application of provisions of the Telecommunications Act of 1996, which is the governing legislation regarding safety and siting of wireless telelcommunications facilities. Web page: RF Safety Program Page. Report title: "A Local Government Official's Guide to Transmitting Antenna RF Emission Safety: Rules, Procedures, and Practical Guidance." The Local and State Government Advisory Committee (LSGAC) and the FCC have developed this guide to aid local governmental officials and citizens in understanding safety issues related to radiofrequency emissions from telecommunications towers. Gary Zeman, Sc.D., CHP Lawrence Berkeley National Laboratory

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I AM TAKING THE FINAL YEAR PROJECT IN BASE STATIONS AND AIR INTERFACE. WOULD LIKE TO HAVE SOME INFORMATION.

You will need to build the table unit for your machine. There are instructions on how to do this at the bottom of the product page here, https://www.buildyourcnc.com/Item/cnc-machine-blackFoot-v4
There is no estimate on how much this will cost though, since there are too many variables involved to do this.

- PC with parallel port and USB port
- 20awg stranded wires for the motors - http://www.buildyourcnc.com/electronicscombo.aspx
- 18awg stranded wires for power supply to drivers
- 24awg stranded wires for breakout board to drivers
(location and spacing of components varies from one person to another, so we do not provide cables/wires)
- General purpose extension cord (cut the female end off) to provide power to power supply
- USB cable to power breakout board
- Parallel cable to communicate to breakout board
- Router
- (optional - instead of router) Spindle with power inverter http://www.buildyourcnc.com/SpindlesAndAccessories.aspx
- (if purchasing spindle with inverter) General purpose extension cord (240v) (cut the female end off) to provide power to power inverter
- End Mill(s) http://www.buildyourcnc.com/ProductsEndMills.aspx
- CAD, and/or CAD-CAM software (to produce geometry, machine operations, and g-code) http://www.buildyourcnc.com/CNCsoftware.aspx
- CNC control software (to read g-code and control machine) http://www.buildyourcnc.com/CNCsoftware.aspx

This answer is applicable to most of our machines with the exception of the greenLean and the blueChick since those machines are equipped with a table structure.

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IF I PURCHASE A GREENBULL 6X LONG Z CNC MACHINE KIT AND MACH3, WHAT ELSE WOULD BE REQUIRED TO ASSEMBLE THE WORKING MACHINE? HAVE CAD SOFTWARE.

There are a number of opportunistic gadgets on the market to allegedly protect the user from hazards of cellular phones. You can search the Internet to find the latest, ranging from antenna shields to whole-body shielding materials. Most experts believe that these devices take advantage of customers' misunderstanding and unfounded fears to sell products with no real value. First of all, cell phones that operate within the guidelines established by national and international safety panels have never been shown to pose a health risk to the user (see answers to other questions on cell phone safety on this website). Secondly, placing any kind of shield over the antenna of a cell phone will in most cases cause it to increase its RF output as it attempts to compensate for signal loss in the shield and maintain a quality phone call. The U.S. Food and Drug Administration published an advisory on cell phones several years ago that said if you are concerned about risks of using a cell phone, then simply use it less. That is still good advice today. Gary Zeman, ScD, CHP Lawrence Berkeley National Laboratory

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ARE THERE PRODUCTS AVAILABLE TO THE GENERAL PUBLIC THAT CAN BE PURCHASED PROTECT CELLULAR OR PORTABLE TELEPHONE USERS FROM RADIATION? IF SO, WHERE THESE FOUND?