Same issue here -- TTL output from the AWC708C never seems to be pulled low. Still troubleshooting.

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MY LASER MACHINE VERTICAL DOES NOT ACTIVATE THE LASER TUBE, VERIFY THE POWER SUPPLIES AND THEY ARE WORKING WHICH THE PROBLEM CAN BE

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 Is the spec sheet out of date?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.

It is never too early to begin planning for the coming fall's influenza vaccination program. The most important thing you can do initially is to place your order for vaccine from your usual source. Some manufacturers often stop taking pre-orders in mid-May. Be sure to include vaccine for pediatric patients needing two doses and also for your facility's healthcare workers as part of your overall campaign.

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WE ARE ALWAYS CONCERNED THAT THERE WON'T BE ENOUGH VACCINE TO VACCINATE OUR PATIENTS IN THE FALL. WHAT CAN DO ASSURED WE'VE DONE ALL POSSIBLY AVOID THIS TYPE OF SITUATION?

The term cGy (centigray) is a unit of absorbed dose of ionizing radiation such as x rays or gamma rays. Cell phones do not emit ionizing radiation. They emit nonionizing radiation, namely radiofrequency (RF) energy. Absorption of nonionizing radiation in the body is measured in terms of the specific absorption rate (SAR) in units of watts per kilogram. Both ionizing and nonionizing radiation are forms of electromagnetic energy. The difference is that ionizing radiation has sufficient energy per photon to cause ionization of molecules. Nonionizing radiation does not. It is the ionizing effect of ionizing radiation that has been linked to increased risk of cancer. For more information on cell phones and health check out a Medical College of Wisconsin website. For more information on ionizing versus nonionizing radiation check out a University of Michigan website. Gary Zeman, ScD, CHP Lawrence Berkeley National Laboratory

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MY QUESTION THAT KNOW CANCER CAN BE CAUSED WHEN OUR BODY EXPOSED TO DOSES OF 50 CGY OR HIGHER. WHAT DOES STAND FOR? DO EMIT?

Your steps per inch will vary. I suggest watching my calibration video.

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I AM CURRENTLY HAVING SOME PROBLEM SQUARING THE GANTRY AND MY STEPS PER INCH ARE NOT 1422.22 ACCORDING TO YOUR CALCULATIONS IN AUTO SET UP THEY COME OUT LIKE 1416.#### THIS A BIG DEAL?

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

Additional Information:

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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?

Yes, however, if you are needing a length of the HIWIN specification rail longer than our 78" max length, then you can abut more than one rail together to increase the length of the rail. We do this for our long X-Axis travels on our Fabricator pro machine.

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I would like some longer HIWIN rails and ballscrews for my x-axis, 9 feet or 108 inches. You list maximums as 78 inches.

dL usually stand for a short that is occurring within the spindle or spindle wiring. I would recheck the wiring going from the VFD to the spindle, as well as the terminal on the spindle where there should've been some soldering required. We usually tend to either heat shrink or use electrical tape to cover the terminals so no contact or arching can be present.

Also depending on the VFD you have please adjust the setting pd008, to the voltage that is required (110V/220V).

If the issue proceeds please contact use at customerservice@buildyourcnc.com, for further assistance or replacement.

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How can we check our 1.5kw spindle. we get a dL error after we start to cut. it spins up fine. We checked IGBTs in the VFD and they're not shorted. We suspect intermittent short INSIDE the spindle. What do you think?

Yes, we do that with our machines. You can use the rail blocks to serve as the alignment mechanism. If you have a slight misalignment, the block will not pass that joint. Make sure you use the same rail from the same supplier.

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Hi i'm looking to upgrade my rail system along my X-axis which is 10 ft. Im wondering what it takes or if it is even possible to join two HIWIN guidways together to make up the 10' run.

The HIWIN rail we stock are part number HGR20 series. 20mm guide length.

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What are the Part numbers / specs for the HIWIN Rails? HG series? RG Series?

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, the blueChick kits are available. You can get the shipping rates automatically in the shopping cart. There will be a calculate shipping button on the enter shipping information section of the shopping cart.

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CAN YOU PLEASE TELL ME THE AVAILABILITY OF 12X36 BLUE CHICK 4.2, AND COST FOR SHIPPING TO ZIP 72802 IN RUSSELLVILLE, ARKANSAS?

There are several reasons why this misconception persists: (1) Less than 1% of people who are vaccinated with the injectable vaccine develop flu-like symptoms, such as mild fever and muscle aches, after vaccination. These side effects are not the same as having influenza, but people confuse the symptoms. (2) Protective immunity doesn't develop until 1–2 weeks after vaccination. Some people who get vaccinated later in the season (December or later) may get influenza shortly afterward. These late vaccinees develop influenza because they were exposed to someone with the virus before they became immune. It is not the result of the vaccination. (3) To many people "the flu" is any illness with fever and cold symptoms. If they get any viral illness, they may blame it on the flu shot or think they got "the flu" despite being vaccinated. Influenza vaccine only protects against certain influenza viruses, not all viruses. (4) The influenza vaccine is not 100% effective, especially in older persons. For more information on this topic, go to: www.cdc.gov/flu/professionals/vaccination/effectivenessqa.htm

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SOME OF MY PATIENTS REFUSE INFLUENZA VACCINATION BECAUSE THEY INSIST "GOT THE FLU" AFTER RECEIVING INJECTABLE VACCINE IN PAST. WHAT CAN I TELL THEM?

Can you provide the model number of your VFD?

Yes, I have the "YL600 - 2S - 2K20"

It just came with a small booklet that is all in Chinese...

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I WIRED MY VFD (2.2KW VERSION) AND TRIED TEST RUNNING THE SPINDLE. CONFIGURED TO YOUR SPECS ON THIS WEBSITE, ONLY ISSUE IS WE GOT AN ERROR CODE. ERR 02, DO YOU KNOW WHAT IS? OR HAVE A LIST OF CODES? THANK

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

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?

Mounting the extruder to the whiteAnt can be done a couple of ways. One is to take the 4 mounting holes located at the lower portion of the z-axis rail support and use long screws protruding out. Take a thinner material and drill the four holes matching the locations of the 4 screws and screw on nuts to hold it in place. The other option would be to use the metal bracket and fasten to the edge of the rail support.

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CAN YOU GIVE ME SOME HELP OR POINT IN THE RIGHT DIRECTION TO INCORPORATE MK 7 EXTRUDER WITH BOOK PLANS FOR 3D PRINTER?

The lens is 20mm wide and a 50.6mm focal length (the one included). This lens will stand up to at least 30PSI air assist.

The mirrors are 25mm wide mirrors.

Focal length is the distance from the lens to the material for the laser converge into the best focal point. If a lens is listed as 2". You measure 2" from the lens to the material, this will be the tightest point the laser can go before it starts to re-expand again losing focus.

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WHAT ARE THE BLACKTOOTH LENS SIZES AND FOCAL LENGTH SPECIFICATIONS?