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?

Currently we do not have that modification kit, our set up is fixed for our greenBull only modification kit we have for this model is the long z-axis kit(Designed for Foam cutting).

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I am building your "Green Bull' 6 foot wide kit and I am at the stage of attaching the motor and drive chain. I would like to know if you have an modification kit available to put the 1/2" ACME screw on the Y-axis?

We don't hold those boards in-house anymore. You can use the schematic to form your own boards if you wish.

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Thanks for the reply. Has this proven to be a good design?

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Regarding L6203/L297 Stepper Board Driver, would you be willing to sell two unpopulated boards? A friend and I are each building a low cost CNC and I already have most of the components. Thanks.

The laser tube is a consumable item in all CO2 lasers, unless the laser tube can be recharged. My laser tubes will most likely work as long as the mouts are the same size. Let me know the mount diameter and the length of space for the tube in the Epilog Laser Cutter and Engraver and I will let you know.

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My Epilog Summit (3.3) only works from Windows Millenium and 98. Notconsistently from WXP, but sporadic raster and vector combined does happen. I can't get it to work right w XP through Harvard Draw, Corel,Image Folio, Stika, DrawMagic or anything else I have. But Millenium isOK except for the advanced mapping to colors function is very difficult.When it does rarely accept a graphic from my XP system from CorelDrawEssentials or 8.0, it will allow complete control for photo etching -speed, power and shade mapping. It is the same driver for both mysystems but the control panel page looks different in the 2 computers. The laser takes 45 seconds to initialize after power on. You can use a USB to Parallel adapter cable for your laptop or modern computer connection. The laser needs the old style printer connection. Test your laser by holding all 3 power/focus/speed buttons until homed. Close the lid. "Online" for lase, any other button for laser off. Should be an audible beep every few seconds while your laser is functioning. This is not a motion test -only laser firing.

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I have a 25 watt Epilog Summit Model 2000/25 laser engraver. I believe my tube is going bad due to limited vector cutting and no raster. Do you think there is a way to retrofit with your products to make it work well. Mirrors are new and mechanical is good. Thanks.

Unfortunately, end mills will dull over time and need to be sharpened or repurchased. We do not currently offer any sharpening service, but we have a large selection of end mills you can find here http://www.buildyourcnc.com/ProductsEndMills.aspx

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Hi, I got two different bits I use alot. The 1/16th and 1/32 end mills. I use them alot for making signs. They seem to be getting dull. They are very expensive so I was wondering can you sharpen these bits? Do you have a service to do this? Thank you

There are two things to consider when using two stepping motors on a single axis. Since you want both motors to spin at the same rate and possibly in the same direction, you need to connect both motor drivers to the same breakout board pins. For example, if you want two motors on the x-axis and the x-axis pins on the breakout board are #2 for step and #3 for direction, the #2 will connect to the step (cp) terminal on each driver and the #3 will connect to the dir (cw) terminal on each driver.

However, if the motors will be opposing (one motor will need to spin in the other direction), you will need to consider either flipping the rack on one side, or adding a circuit to invert the direction (#3) signal going to that driver.

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I'm planning a rack and pinion style gantry, and need clarification on how to slave a second stepper to the Y (or X). Can you direct me to that information for your products?

Currently our only location is in Katy, Texas at this current time, we can help you assemble the machine and if any issues occur we can always help you with the problems, but will have to be managed through email or phone (which ever is your preference).

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I live in China and my company would like to buy the 40w laser cutting machine. I am wondering if you can help us assemble and maintain the machine in China? Do you have any service point here? Thank you

The limitation of our machines lies with the width of our gantry, so extending the blackToe to 2' x 6' will not be a problem. Adding the required aluminum rails and chain is the essentials that we sell on our website(http://www.buildyourcnc.com/CNCMachineMechanicalParts.aspx). The table extension is something we do not offer. Please contact (customerservice@buildyourcnc.com) for custom requests.

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I have a Black Toe CNC with your optional table, and wish to extend the x-axis to 6' of cutting length. Is is as easy as ordering another section of table, longer x-axis chain, and longer x-axis rails? If so, would you sell these items?

Yes, the 5 axis breakout board is a very suitable replacement and also contains a relay for spindle/router control which is not on the C10 board.

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I have propably blown my C10 breakout board. This is no longer available in your parts list. Is the 5 Axis Breakout Board with Relay a suitable replacement?

The Mach3 USB will not work with Linux CNC. You can use our parallel breakout baord instead (if you have a computer that has a parallel port available).

Here is the link to that interface:
https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay

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Hello. I'm currently building my first CNC router, and I'm powering it with a 3 axis electronics kit that was purchased through your site. I chose to get the Mach 3 USB Breakout board, but now I'm wanting to try to use Linux CNC to work with the computer I have available. Will that work with this board?

Thanks for your interest in the 80 Watt Laser Tube Power Supply. We will start offering the 220 Volt version of these power supplies on September 23rd.

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I was looking for a MYJG80W power supply but I see you may not have the 220 volt version. Do you have these as yet and if not what can you advise on availability or where I may find one...Thanks

Identify the Control Signals: First, determine which control signals from the DB25 interface card are used for spindle speed control. Typically, these are PWM (Pulse Width Modulation) signals or analog voltage signals.

VFD Configuration: Your VFD should be configured to accept the type of control signal your DB25 card provides. This involves setting parameters in the VFD that correspond to the type of input signal it will receive for speed control.

Wiring: Connect the appropriate output pins from the DB25 card to the input terminals on the VFD. This usually involves connecting the PWM or analog output to the corresponding input on the VFD. Make sure to consult the manuals for both your VFD and interface card for specific wiring details.

UCCNC Settings: Configure UCCNC to output the correct type of signal (PWM or analog) that matches your VFD's configuration. This is done through the software's spindle setup section.

Test and Adjust: Run some tests to ensure that the spindle speed is being correctly controlled by UCCNC. You might need to tweak settings in either the VFD or UCCNC for optimal performance.

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I am looking at purchasing your 2.2 kw water cooled spindle. I'm assuming it comes with the VFD. I have a rotary phase converter in my shop. Are these spindles 3 phase? And if so, can I bypass use of the VFD and control the spindle speed by the CAM software instead? Or is the VFD an absolute necessity to use on the spindle?

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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I need your assistance... I have two items left to setup on my Pokey57CNC and Mach4, Home switches and Spindle Speed. I have watched the videos, but they are for Mach3 and the screens are different in Mach4. Can someone please explain the setup of these two items in Mach4?

The plans for the whiteAnt 3D Printer will have the dimesions, and the dimensions will be on the individual pieces(cut to spec). The machine is relatively small, so maybe you expected the size(dimensions) to be larger.

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The plans available for download for the "whiteAnt 3D Plastic Printer" do not have dimensions. Are the dimensions shown in the book? Is there a DWG file available?

You can reach us at sales@buildyourcnc.com

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Can you send me an email address please, so I could discuss the possibilities of making your products in the Uk /Europe under a licence agreement. Regards Roger

Sure, let me check.

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Your order was shipped out on Tuesday (10/20/2020). I noticed that your email was not stored in the customer record when the order was made. I will send you the tracking number via email now.

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Placed an order for the cable set for the Pokeys57cnc interface on 10/20 but it is not showing up in My Account as being ordered. It was charged to my credit card and I have not had any info that it was received by you.

Actual table dimension: 4'x8' is 56.078"x 121.50" (the overhang in the illustrations should be 3/4" thick)
To determine the frame dimensions, first consider using the frame height shown of almost 3' (2.86'). The width of the frame should be 4" narrower than the dimension from rail edge to rail edge (6X rail to rail is 80.078"). This will provide a 2" overhang on both sides (4X frame width should be 56.078").
The length of the frame should be 4" shorter than the desired length of the rails to provide a 2" overhang on both ends. The travel length will be 20" shorter than the rail length due to the space occupied by the gantry sides.
Two long pieces of 3/4" material will need to be placed on top of the frame with the 2" overhang on the sides and the end. These long strips of material will receive the rails and the chain mounts on the ends.


Link:
https://www.buildyourcnc.com/Item/cnc-machine-greenBull-v4-4X

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I have just purchased a 4x8 Greenbull system second-hand. Are there any schematics for table dimensions and rail-mounting available so that I can build a table? (previous owner disassembled)

Yes, the board and kit is available and for sale. If you need the board without the chip installed (so you can solder the chip on the board yourself), we can offer that. Give us a call and we will let you know the price of that option.

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Hello. I'm trying to start a cortex M4 based project and found your STM32 M0 MCU and Interface to Breadboard on newbiehack. I saw your name was listed as the author and it led me to here. Is this board still available and is it available without the M0 chip already on it? I need to use a M4 chip for the extra memory. Thank you.

The E.Lu.5 Error code on your VFD is related to Low Voltage.

The recommended action is:
- 1. Check whether the input voltage is normal. (the voltage from the wall/breaker to the VFD)
- 2. Check whether there is a sudden change in load.
- 3. Check whether there is any phase missing.

Unfortunately, these three recommended actions will probable require an electrician to test the line going into the VFD.

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I have wired up my 110v VFD and my 2.2Kw spindle and I get an E.Lu.5 code. My wiring is correct and the parameters are set to those for the VFD according to your website I found in a previously answered question from someone here. Any help would be greatly appreciated, thank you!!