Douglas Pollard wrote: ...... > But what difference does base 10 make to a guy running a cnc machine??
Let me answer with a question: what's easier to add, 3/8 + 11/32 or 0.375 + 0.34375? While this is CNC related mailing list, standards are critical for clear communications between interested parties. Some of us still remember time before the Internet and how hard it was to "talk to anybody" around the world. Whole world adopted TCP/IP internet protocol to connect computers over different media. Many standards were adopted from inventions coming from USA, computer standards (software and hardware), aviation, etc. but for God's sake drop this silly awkward measuring system that majority of population doesn't understand and go metric. I challenge you to ask 5th grade student what's the difference in thickness between gauge 22 copper wire and 12 gauge steel wire. > I'm sure it makes a difference from some scientific perspective but we > are making parts. It seems to me that it is the job of engineers, > designers and scientist to design them. After that his job is to Metric system is simply easier to understand because it's a decimal system. God gave us 10 fingers for use with a decimal system not 12. Everybody with 2 or 3 years of basic schooling can understand it. Machinists use mm (millimeters) with precision in 1/1000's of mm in general. Carpenters use centimeters (1cm=10mm) in my experience, and so do cabinet makers and house builders. It's the level of accuracy you need that determines which one you use as a base, mm or cm. What you don't see perhaps is the simple relationship between basic units of weight, volume, mass, power, energy, etc. 1 cubic meter of water weights 1 ton = 1000kg. 1L = 1kg = 10cm^3 of water. Other relations are easy too but I won't go into that here. Same thing no matter where in the world you go, including ISS. > discribe in the best possible way and dimension and draw them in such a > way that we as machinists, can make them. It is not important how he > would like to do it but only that he can get his ideas across to the > person who is going to make the parts. The moment the communication > becomes about the designer's preferences the connection is lost quality > goes down and cost goes up. No matter how great the engineer if he > does not comunicate in the best possible way the machinist or machine > operators all need to go get a degree. It is all about communication and > what ever system communicates the best is the answer. This is at least > how it seems to me. The burden is on the communicator to make his wants > understood. A qualified machinist should be able to look at a drawing > a few minutes and only look back at the drawing now and then to check a > dimention. I feel I have worn this subject out. I'm sure others do not > see this from my point of view at all and so this is only my > perspective. Doug > Some of us adapted to different culture, language, technologies, etc. I don't mind doing that if it takes me a meter ahead but dragging feet is not. That's life. -- Rafael ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
