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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#41
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Free - Foundations of Mechanical Accuracy
"Ed Huntress" wrote in message
... On Sun, 21 Jan 2018 19:44:53 -0600, Robert Nichols wrote: On 01/18/2018 02:53 PM, Leon Fisk wrote: On Thu, 18 Jan 2018 14:56:05 -0500 Ed Huntress wrote: huge snip It's disheartening to become obsolete. d8-) Yeah, I use to fix stuff, good thing I retired when I did. Still do for friends when I feel ambitious, which isn't often nowadays. Now people replace stuff, even the "repair" guy... I recently repaired a printer for a neighbor -- fixed a mechanical problem with the paper feed deep inside the printer. Neighbor said I should go into business repairing printers. I pointed out that for my time at minimum wage I would have to charge twice what a new printer would cost. That's something that a lot of us overlook. And that's why we aren't rich. d8-) -- Ed Huntress I factor in the knowledge gained from fixing something I didn't previously understand, if relevant to the stuff I own or want to buy. For example the repair instructions for the HP6110 3-in-1 printer I was given say to swap it for a less troublesome newer model, but I found that Mass Air Flow Sensor cleaner works fine to restore the clouded front surface mirror. -jsw |
#42
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Free - Foundations of Mechanical Accuracy
On Mon, 22 Jan 2018 07:28:26 -0500, "Jim Wilkins"
wrote: "Larry Jaques" wrote in message news On Sat, 20 Jan 2018 08:33:05 -0500, "Jim Wilkins" wrote: "Larry Jaques" wrote in message ... On Thu, 18 Jan 2018 16:53:24 -0400, Leon Fisk wrote: On Thu, 18 Jan 2018 14:56:05 -0500 Ed Huntress wrote: huge snip It's disheartening to become obsolete. d8-) Yeah, I use to fix stuff, good thing I retired when I did. Still do for friends when I feel ambitious, which isn't often nowadays. Now people replace stuff, even the "repair" guy... Yeah, the new "techs" are board replacers because the computer diagnostics told them to do so. In 1970 the Army trained me to repair computer communications 'peripherals' to the component level after memorizing the machines' operations, but the material was so difficult that only students with science degrees completed it. Four of us survived the forty week course, whittled down from over 80 entrants. We were available only because the grad school draft deferment had been dropped. Wow, large drop rate. I learned the basics at Coleman College, but only stayed working in the field for 3 years. That means I don't have a firm background in it, unfortunately, and can't look at a circuit on the PCB and tell you what it does and how. :-( SKS bought the company I worked for and moved it to Sandy Eggo, changing my 11 minute commute to over 2 hours per day. I took the separation package. The Army was soon forced to revert to a test procedure for board swappers. I think the problem was that people who could do it were qualified for better jobs. I certainly preferred designing and building new equipment over repairing older stuff. Good for you, and I can certainly understand your preference. Who repaired the boards, or did they? That would be good stock to help turn the board swappers into real techs. AFAIK we were trained to the Depot (highest) level although we didn't have comparable test or soldering equipment, if any, in the "field", more often a forest. In fact during Vietnam Europe was starved of everything, we couldn't even get wiper blades etc for Jeeps and kept about half our allotment of them running with personal purchases from J.C.Whitney, which resulted in dangerously overpowered engines and numerous roll-overs on winding back roads better suited to the Ultimate Driving Machine. Most soldiers didn't go off base and thus had money to burn. Testing has evolved in the direction of not requiring expert operators, it leverages the knowledge that designed / debugged the prototype. http://www.4pcb.com/pcb-electrical-testing.html The Golden Board test is a good example. It and the Device Under Test are driven identically in parallel and the test station or operator looks for differences. The test station designer (me) needs to provide a black-box imitation of the rest of the system. State-of-the-art stuff. Is there a rule similar to Moore's Law for tech? Everything has made fantastic jumps since I was playing around with it in the late '80s, that's for sure. - A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. -Robert A. Heinlein |
#43
Posted to rec.crafts.metalworking
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Free - Foundations of Mechanical Accuracy
"Larry Jaques" wrote in message
... On Mon, 22 Jan 2018 07:28:26 -0500, "Jim Wilkins" wrote: "Larry Jaques" wrote in message news On Sat, 20 Jan 2018 08:33:05 -0500, "Jim Wilkins" wrote: "Larry Jaques" wrote in message m... On Thu, 18 Jan 2018 16:53:24 -0400, Leon Fisk wrote: On Thu, 18 Jan 2018 14:56:05 -0500 Ed Huntress wrote: huge snip It's disheartening to become obsolete. d8-) Yeah, I use to fix stuff, good thing I retired when I did. Still do for friends when I feel ambitious, which isn't often nowadays. Now people replace stuff, even the "repair" guy... Yeah, the new "techs" are board replacers because the computer diagnostics told them to do so. In 1970 the Army trained me to repair computer communications 'peripherals' to the component level after memorizing the machines' operations, but the material was so difficult that only students with science degrees completed it. Four of us survived the forty week course, whittled down from over 80 entrants. We were available only because the grad school draft deferment had been dropped. Wow, large drop rate. I learned the basics at Coleman College, but only stayed working in the field for 3 years. That means I don't have a firm background in it, unfortunately, and can't look at a circuit on the PCB and tell you what it does and how. :-( SKS bought the company I worked for and moved it to Sandy Eggo, changing my 11 minute commute to over 2 hours per day. I took the separation package. The Army was soon forced to revert to a test procedure for board swappers. I think the problem was that people who could do it were qualified for better jobs. I certainly preferred designing and building new equipment over repairing older stuff. Good for you, and I can certainly understand your preference. Who repaired the boards, or did they? That would be good stock to help turn the board swappers into real techs. AFAIK we were trained to the Depot (highest) level although we didn't have comparable test or soldering equipment, if any, in the "field", more often a forest. In fact during Vietnam Europe was starved of everything, we couldn't even get wiper blades etc for Jeeps and kept about half our allotment of them running with personal purchases from J.C.Whitney, which resulted in dangerously overpowered engines and numerous roll-overs on winding back roads better suited to the Ultimate Driving Machine. Most soldiers didn't go off base and thus had money to burn. Testing has evolved in the direction of not requiring expert operators, it leverages the knowledge that designed / debugged the prototype. http://www.4pcb.com/pcb-electrical-testing.html The Golden Board test is a good example. It and the Device Under Test are driven identically in parallel and the test station or operator looks for differences. The test station designer (me) needs to provide a black-box imitation of the rest of the system. State-of-the-art stuff. Is there a rule similar to Moore's Law for tech? Everything has made fantastic jumps since I was playing around with it in the late '80s, that's for sure. Once tech reaches Good Enough the improvements slow way down. Maximum CPU clock speed leveled off around 4 GHz quite a while ago. https://en.wikipedia.org/wiki/Compar...tel_processors I doubt most people would recognize a Boeing 707 airliner or an F-4 Phantom fighter built in 1958 as being a quaint half-century-old antique, and today's models aren't even faster. -jsw |
#44
Posted to rec.crafts.metalworking
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Free - Foundations of Mechanical Accuracy
In rec.crafts.metalworking, Jim Wilkins wrote:
"Larry Jaques" wrote: State-of-the-art stuff. Is there a rule similar to Moore's Law for tech? Everything has made fantastic jumps since I was playing around with it in the late '80s, that's for sure. Once tech reaches Good Enough the improvements slow way down. Maximum CPU clock speed leveled off around 4 GHz quite a while ago. https://en.wikipedia.org/wiki/Compar...tel_processors I doubt most people would recognize a Boeing 707 airliner or an F-4 Phantom fighter built in 1958 as being a quaint half-century-old antique, and today's models aren't even faster. Here's a great talk about Moore's Law that also uses a long detailed aircraft history analogy to talk about that "Good Enough" barrier: http://idlewords.com/talks/web_desig..._100_years.htm A quote from the middle: These are the victories of good enough. This stuff is fast enough. Intel could probably build a 20 GHz processor, just like Boeing can make a Mach 3 airliner. But they won't. There's a corrollary to Moore's law, that every time you double the number of transistors, your production costs go up. Every two years, Intel has to build a completely new factory and production line for this stuff. And the industry is turning away from super high performance, because most people don't need it. Certainly the first half of if it is going to be relevant to people not in the original audience of web designers. The author has a smooth insightful way to mock things. Elijah ------ one of the newest talks compares ham radio to the internet |
#45
Posted to rec.crafts.metalworking
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Free - Foundations of Mechanical Accuracy
"Eli the Bearded" wrote in message
... In rec.crafts.metalworking, Jim Wilkins wrote: "Larry Jaques" wrote: State-of-the-art stuff. Is there a rule similar to Moore's Law for tech? Everything has made fantastic jumps since I was playing around with it in the late '80s, that's for sure. Once tech reaches Good Enough the improvements slow way down. Maximum CPU clock speed leveled off around 4 GHz quite a while ago. https://en.wikipedia.org/wiki/Compar...tel_processors I doubt most people would recognize a Boeing 707 airliner or an F-4 Phantom fighter built in 1958 as being a quaint half-century-old antique, and today's models aren't even faster. Here's a great talk about Moore's Law that also uses a long detailed aircraft history analogy to talk about that "Good Enough" barrier: http://idlewords.com/talks/web_desig..._100_years.htm A quote from the middle: These are the victories of good enough. This stuff is fast enough. Intel could probably build a 20 GHz processor, just like Boeing can make a Mach 3 airliner. But they won't. There's a corrollary to Moore's law, that every time you double the number of transistors, your production costs go up. Every two years, Intel has to build a completely new factory and production line for this stuff. And the industry is turning away from super high performance, because most people don't need it. Certainly the first half of if it is going to be relevant to people not in the original audience of web designers. The author has a smooth insightful way to mock things. Elijah ------ one of the newest talks compares ham radio to the internet Those were certainly the long and the short of it. |
#46
Posted to rec.crafts.metalworking
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Free - Foundations of Mechanical Accuracy
On Mon, 22 Jan 2018 19:05:17 -0500, "Jim Wilkins"
wrote: "Eli the Bearded" wrote in message ... In rec.crafts.metalworking, Jim Wilkins wrote: "Larry Jaques" wrote: State-of-the-art stuff. Is there a rule similar to Moore's Law for tech? Everything has made fantastic jumps since I was playing around with it in the late '80s, that's for sure. Once tech reaches Good Enough the improvements slow way down. Maximum CPU clock speed leveled off around 4 GHz quite a while ago. https://en.wikipedia.org/wiki/Compar...tel_processors I doubt most people would recognize a Boeing 707 airliner or an F-4 Phantom fighter built in 1958 as being a quaint half-century-old antique, and today's models aren't even faster. Here's a great talk about Moore's Law that also uses a long detailed aircraft history analogy to talk about that "Good Enough" barrier: http://idlewords.com/talks/web_desig..._100_years.htm Love the 2045 blurb: --snip-- And if you think that the purpose of the Internet is to BECOME AS GODS, IMMORTAL CREATURES OF PURE ENERGY LIVING IN A CRYSTALLINE PARADISE OF OUR OWN INVENTION, then your goal is total and complete revolution. Everything must go. The future needs to get here as fast as possible, because your biological clock is ticking! The first group wants to CONNECT THE WORLD. The second group wants to EAT THE WORLD. And the third group wants to END THE WORLD. These visions are not compatible. --snip-- A quote from the middle: These are the victories of good enough. This stuff is fast enough. Intel could probably build a 20 GHz processor, just like Boeing If they're doing it now, they likely have the most advanced AIs in existence and are predicting human behavior, investing in up and coming market trends. Wall Street and D.C. would pay a bundle for one. one of the newest talks compares ham radio to the internet Those were certainly the long and the short of it. Waves? - A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. -Robert A. Heinlein |
#47
Posted to rec.crafts.metalworking
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Free - Foundations of Mechanical Accuracy
"Larry Jaques" wrote in message
... On Mon, 22 Jan 2018 19:05:17 -0500, "Jim Wilkins" wrote: "Eli the Bearded" wrote in message ... In rec.crafts.metalworking, Jim Wilkins wrote: "Larry Jaques" wrote: State-of-the-art stuff. Is there a rule similar to Moore's Law for tech? Everything has made fantastic jumps since I was playing around with it in the late '80s, that's for sure. Once tech reaches Good Enough the improvements slow way down. Maximum CPU clock speed leveled off around 4 GHz quite a while ago. https://en.wikipedia.org/wiki/Compar...tel_processors I doubt most people would recognize a Boeing 707 airliner or an F-4 Phantom fighter built in 1958 as being a quaint half-century-old antique, and today's models aren't even faster. Here's a great talk about Moore's Law that also uses a long detailed aircraft history analogy to talk about that "Good Enough" barrier: http://idlewords.com/talks/web_desig..._100_years.htm Love the 2045 blurb: --snip-- And if you think that the purpose of the Internet is to BECOME AS GODS, IMMORTAL CREATURES OF PURE ENERGY LIVING IN A CRYSTALLINE PARADISE OF OUR OWN INVENTION, then your goal is total and complete revolution. Everything must go. The future needs to get here as fast as possible, because your biological clock is ticking! The first group wants to CONNECT THE WORLD. The second group wants to EAT THE WORLD. And the third group wants to END THE WORLD. These visions are not compatible. --snip-- A quote from the middle: These are the victories of good enough. This stuff is fast enough. Intel could probably build a 20 GHz processor, just like Boeing If they're doing it now, they likely have the most advanced AIs in existence and are predicting human behavior, investing in up and coming market trends. Wall Street and D.C. would pay a bundle for one. https://www.technologyreview.com/s/4...cessing-speed/ |
#48
Posted to rec.crafts.metalworking
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Free - Foundations of Mechanical Accuracy
Larry Jaques on Wed, 17 Jan 2018
22:29:38 -0800 typed in rec.crafts.metalworking the following: Internet archive used to make djvu docs until about a year ago. They were far superior to pdf. Don't know what happened other than I found other people complaining about the loss too. Hmm, I don't recall seeing the djvu format, or maybe just overlooked them as not a format I recognized. What readers read them? Speaking of which, I miss the hell out of DejaVu, the wonderful pre-Google site. I remember back when Google wasn't a bad search engine, either. Some docs come from Googles scanning project and really suck. I always avoid those if at all possible... Yeah, I downloaded a book which was supposed to be over 60% pictures the other day and found that it had NONE in it. Paragraph descriptions of everything followed by no pics. It's criminal, Google! I downloaded a book - massive tome, which had the passages I was looking for. But the scan which had all manner of gibberish in it. Bad OCR. Really bad. Plus many pages where column A is preceded by column B, followed by Column C. Fortunately, I found a PDF scan (with pictures) so I could start sorting it out. Like I need another project. -- pyotr filipivich "With Age comes Wisdom. Although far too often, Age travels alone." |
#49
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Free - Foundations of Mechanical Accuracy
On Thu, 25 Jan 2018 07:16:27 -0500, "Jim Wilkins"
wrote: "Larry Jaques" wrote in message .. . On Mon, 22 Jan 2018 19:05:17 -0500, "Jim Wilkins" wrote: "Eli the Bearded" wrote in message Intel could probably build a 20 GHz processor, just like Boeing If they're doing it now, they likely have the most advanced AIs in existence and are predicting human behavior, investing in up and coming market trends. Wall Street and D.C. would pay a bundle for one. https://www.technologyreview.com/s/4...cessing-speed/ OK, for words, that may be one measurement. The test was for "lexical decision tasks". What about identification of threats? Smells? Too bright of a light? Now watch this guy shoot 2 balloons in 0.02 of a second. Tell me how many synapses fired to make that happen. https://www.youtube.com/watch?v=hujvVmuLuoM Jerry Miculek can draw, aim, & fire 8 rounds on multiple targets in under a second after identifying a beep. How many synapses? https://www.youtube.com/watch?v=ChSazF41q-s Cupstacking, anyone? https://www.youtube.com/watch?v=EJu5MZfSvBE So, obviously, there are differences in mental/physical task speeds. I lean toward thinking that the brain works in the megaflop speeds, myself. As Moscoso said at the end, when he saw the article, he doesn't think there's an upper limit, even in the lexical realm. - A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. -Robert A. Heinlein |
#50
Posted to rec.crafts.metalworking
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Free - Foundations of Mechanical Accuracy
"Larry Jaques" wrote in message
... On Thu, 25 Jan 2018 07:16:27 -0500, "Jim Wilkins" wrote: "Larry Jaques" wrote in message . .. On Mon, 22 Jan 2018 19:05:17 -0500, "Jim Wilkins" wrote: "Eli the Bearded" wrote in message Intel could probably build a 20 GHz processor, just like Boeing If they're doing it now, they likely have the most advanced AIs in existence and are predicting human behavior, investing in up and coming market trends. Wall Street and D.C. would pay a bundle for one. https://www.technologyreview.com/s/4...cessing-speed/ OK, for words, that may be one measurement. The test was for "lexical decision tasks". What about identification of threats? Smells? Too bright of a light? Now watch this guy shoot 2 balloons in 0.02 of a second. Tell me how many synapses fired to make that happen. https://www.youtube.com/watch?v=hujvVmuLuoM Jerry Miculek can draw, aim, & fire 8 rounds on multiple targets in under a second after identifying a beep. How many synapses? https://www.youtube.com/watch?v=ChSazF41q-s Cupstacking, anyone? https://www.youtube.com/watch?v=EJu5MZfSvBE So, obviously, there are differences in mental/physical task speeds. I lean toward thinking that the brain works in the megaflop speeds, myself. As Moscoso said at the end, when he saw the article, he doesn't think there's an upper limit, even in the lexical realm. https://en.wikipedia.org/wiki/Speed_reading http://bigthink.com/endless-innovati...t-for-how-long ..-jsw |
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