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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WILL CELL PHONES SPARK A FIRE AT THE GAS STATION?

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.

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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IS IT DANGEROUS TO USE YOUR CELL PHONE AT A GAS STATION?

Nucleus is the organelle of a living cell DNA is found.

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WHAT PART OF A CELL IS DNA FOUND?

Physical size of the subject affects the fraction of the total radiofrequency energy that is absorbed in the body. To account for this known effect, the maximum permissible exposure standards for radiofrequency energy were set for the worst-case condition, that is assuming the body size for maximal absorption at a given frequency. Thus the maximum permissible exposure standards are fully protective for bodies of different sizes. For more detailed information, see the answers and the cited references to questions 79, 109, 694, and 893 under the Nonionizing Radiation section of the Health Physics Society Ask The Expert Web page. Gary H. Zeman, ScD, CHP

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WHAT EFFECTS OF CELL PHONES WILL THERE BE ON YOUNGER PEOPLE OPPOSED TO OLDER PEOPLE? THE AGE OR STATE DEVELOPMENT EFFECT DANGERS A PHONE?

Hands-free cell phone car microphones have been tested by the manufacturers and meet the current ANSI/IEEE (American National Standards Institute/Institute of Electrical and Electronics Engineers) standards for radiofrequency (RF) safety. These are the same standards that the Federal Communications Commission enforces under the Telecommunications Act of 1996, and they place limits on the specific absorption rate (SAR) of RF energy in the body. Recent inflammatory articles in the British press were not substantiated by testing at ISO-accredited testing facilities at Motorola. Manufacturers of cell phones are required under FCC regulations to assure that their products meet the SAR limits on both hand-held and hands-free units. Further information can be obtained on the Internet at The Center for Devices and Radiological Health (FDA information) or Office of Engineering and Technology (FCC information).

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CELL PHONE USE

Hands-free cell phone car microphones have been tested by the manufacturers and meet the current ANSI/IEEE (American National Standards Institute/Institute of Electrical and Electronics Engineers) standards for radiofrequency (RF) safety. These are the same standards that the Federal Communications Commission enforces under the Telecommunications Act of 1996, and they place limits on the specific absorption rate (SAR) of RF energy in the body. Recent inflammatory articles in the British press were not substantiated by testing at ISO-accredited testing facilities at Motorola. Manufacturers of cell phones are required under FCC regulations to assure that their products meet the SAR limits on both hand-held and hands-free units. Further information can be obtained on the Internet at The Center for Devices and Radiological Health (FDA information) or Office of Engineering and Technology (FCC information).

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COULD YOU PLEASE EXPLAIN, IF IT'S TRUE, THAT HANDS-FREE CELL PHONE CAR MICROPHONES RADIATE MORE THAN ANY OTHER INSTRUMENT USED WITH THESE PHONES?

Nucleus is the organelle of a living cell DNA is found.

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IN WHICH ORGANELLE OF A LIVING CELL DNA FOUND?

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 IS LASER AND LENS FOCAL LENGTH?

You can expect a two week lead time for the redFrog pick and place machine.

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WHAT IS THE PICK AND PLACE LEAD TIME?

Portable cell phones emit about 0.6 watts of radiofrequency energy, limited primarily by the power of the battery. As with any radiofrequency transmitter, there will be some amount of absorption in the human body; the amount depends on how close you are to the antenna. The Federal Communications Commission (FCC) limits the amount of radiofrequency energy which cell phones can deposit in the body to levels at which no health effects are to be expected. See an article on Cell Phone Safety on this website for more information.

Gary H. Zeman, ScD, CHP

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HOW MUCH RADIATION GIVEN OFF BY A CELL PHONE AND THERE ANY WAY TO STOP THE FROM BEING ABSORBED INTO YOURSELF?

the package sizes will be listed in your shopping cart, in the item detail. The site will also fully calculate shipping charges directly from the carrier, for each package you purchase.

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AND WHAT SIZES ARE THE PACKAGES OF MACHINE.

There is very little radiofrequency (RF) energy exposure to people inside a building from a cellular base station located on its roof. There are several reasons for this. First, the transmitters operate at low power levels. Second, the antennas are normally mounted near the edges of the roof and are aimed away from the building. Third, most cellular transmitters use "high gain" or panel antennas. Such antennas transmit most of their energy in a narrow beam (in the vertical direction) from their front surfaces, away from the building. They radiate very little energy downwards towards the roof or backwards from their rear surfaces. Finally, building materials absorb a significant fraction of the RF energy passing through them. As a result, the RF signal levels at any location inside the building are invariably low and far below safety limits. The situation might be different in some locations on the roof itself. RF signal levels close to (within a few feet) and directly in front of cellular base station antennas can easily exceed safety limits. Some precautions are needed to prevent people from walking directly in front of the antennas while they are transmitting. This applies also to paging and other systems that use rooftop antennas, some of which transmit at higher power levels than many cellular base stations. Kenneth R. Foster, Ph.D.

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WHAT ARE THE HEALTH RISKS OF LIVING NEAR A CELL PHONE TOWER?

3 axis machines cannot create undercuts in the part.

These videos show the capabilities of 3 and 5 axis machining:

3-axis CNC:

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WHAT THE DIFFERENCE BETWEEN 3 AXIS AND 5 CNC?

Standard Version Features Mach3 Mach4 Hobby Mach4 Industrial
Number of Planners 1 1 1
Number of Axis 6 6 6
Out of Band Axis (OBA) 0 1 6
Slave axis (uses up coordinated axes) 3 N/A N/A
Slave motors (does not use up coordinated axes) N/A 4 per Axis 4 per Axis
API Interface - Open to All Hardware Yes Yes Yes
Extended Plugin Support Yes Yes Yes
User customizable GUI Yes Yes Yes
Unified (GUI) Interface - PLC, CNC, etc.. Yes Yes
Unlimited IO Yes Yes Yes
Modbus PLC Yes Yes Yes
PMC (Ladder Logic addressing for cnc/plc) Yes Yes
Unlimited File Size Yes Yes
Tool Path Display Yes Yes Yes
Tool Path Speed & Quality Low High High
Scripting - Customization Yes Yes Yes
LUA Scripting - simple, fast, cross-platform Yes Yes
- Lua sockets (ftp, http, smtp,..) Yes Yes
- SSL (security layer) Yes Yes
- LFS (manage large files and data storage) Yes Yes
- Seriel port Yes Yes
- Enraving of part numbers / serial numbering of parts Yes Yes
- Plugin panel objects Yes Yes
IPC Library for Data Sharing/tracking (Interprocess communication) Yes Yes
Full Feature Screens/Controls Per Machine Type Yes Yes
Currently Availabe: Mill, Router, Lathe, 3d Printer Yes Yes
Multiple gcode Interpruters (Per Machine Type) Yes Yes
Probing - Intergrated in standard screens Yes Yes
Simulated 3d Machining (with additional plugin license) Yes Yes
Tool Life Management (G10 L3 command) Yes
Screw Mapping Yes
Professional Screen Designer (advanced G.U.I.) Yes
- Screen Animation Control Yes
- Screen Integrated Tool Table Control Yes
- Screen Integrated Work Offset Control Yes
- Screen Integrated gcode editor Yes
- Screen Artsoft Wizard Package Integration Yes
Macro B gcode Programming (#variables) Yes
- User definable gcodes via marco calls Yes
- Macro Calls: G65, G66, G66.1 Yes
- gcode via marco call (custom G codes via macro B) Yes
- mcode via macro call (custom M codes via macro B) Yes
- mcode via sub code (custom M code via sup program) Yes
- Conditional gcodes Yes
- set VN call - define variable names Yes
gcode Editor Included Yes
Scripted M code (custom M code via LUA script) Yes Yes
Variable Speed Spindle Yes Yes Yes
Spindle Relay Yes Yes Yes
Coolant relay Yes Yes Yes
Mist Relay Yes Yes Yes
Threading Yes Yes Yes
Rigid Tapping Yes Yes Yes
Single Block Yes Yes Yes
Block Delete Yes Yes Yes
Optional Stop Yes Yes Yes
MACH CNC CONTROL SOFTWARE MAIN FEATURES AND VERSION DIFFERENCES
Standard Version Features Mach3 Mach4 Hobby Mach4 Industrial
MACH CNC CONTROL SOFTWARE MAIN FEATURES AND VERSION DIFFERENCES
Cutter Comp Yes Yes Yes
Fanuc Type C Cutter Comp Yes Yes
Fixture Offsets Yes Yes Yes
G51 Scaling Yes Yes Yes
G92 Offsets Yes Yes Yes
G52 Offsets Yes Yes Yes
Event Driven Yes Yes
Multi Line MDI Yes Yes
Subs In MDI Yes Yes
OpenGL Optimization Yes Yes
Multi-platform OS Compatibility Option Yes Yes
Online Support Yes Yes Yes
Phone Support Option Available Yes
Support Priority Yes
Available to End Users as "Do-it-yourself" Yes Yes
Summary - Mach3 versus Mach4 :
Mach4 Hobby is the closest comparable version to Mach3, yet it is still much more advanced. The price point of these versions is nearly
identical. Mach3 is very popular for hobby enthusiest and is used in highly modified form by some great OEM's. In general, Mach4 is more
complex than Mach3 and follows cnc industry standards. Mach3 has many customizations to make it easier for hobby users, but can lead to
difficulties if users plan to apply their knowledge to more advanced systems. Mach4 is built as a full featured cnc controller capable of high
speed machining for servo and stepper systems. Mach3's feature set is complete, while Mach4's will continue to expand. If you are new to cnc,
Artsoft highly recommends using and learning Mach4 even if it appears that Mach3's feature set will be adequate for your needs.

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WHAT IS THE DIFFERENCE BETWEEN MACH3 AND MACH4?

I'll be honest, it can be pretty awful at times. You'll want a dedicated exhaust line. Cut a new hole, make a dedicated line. Also, invest in a charcoal air filter, it will help. Trust me. They can also be done DIY very inexpensively. Buy a "Universal Pre-filter" and simply wrap it around a screen and have air push down through the screen wrapped in the charcoal laden felt. $20 + fan + screen. Away you go =)

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HOW BAD IS THE SMOKE AND EXHAUST USING BLACKTOOTH?

If you purchased a machine that was used and you don't know which mode it is, you can browse our models here:
https://www.buildyourcnc.com/Item/milling

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I BOUGHT A 2.0 AND NEED HELP PUTING IT TOGATHER ELC

If you purchased a machine that was used and you don't know which mode it is, you can browse our models here:
https://www.buildyourcnc.com/Item/milling

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I BOUGHT A 2.0 AND NEED HELP PUTING IT TOGATHER ELC

If you purchased a machine that was used and you don't know which mode it is, you can browse our models here:
https://www.buildyourcnc.com/Item/milling

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I BOUGHT A 2.0 AND NEED HELP PUTING IT TOGATHER ELC