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#91
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aluminum machining? A q that is technical but not bicyclic
wrote in message
... stuff My main feeling on the later parts of this thread is "So what?". Apple in marketing shock. Hardly news. |
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#92
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aluminum machining? A q that is technical but not bicyclic
M-gineering wrote:
wrote: Sorry, but this sounds like cognitive dissonance: Step 32. We got it [the keyboard] off! Phew. It took about 15 minutes to remove all the [56] screws. . . . Step 33. Wow! What an incredible machine. We are very impressed by the ease with which the new MacBook Pro came apart. http://www.ifixit.com/Guide/First-Lo...Unibody/Page-1 Maybe 112 screws and 30 minutes would have been even more incredible, impressive, and easy? Cheers, Carl Fogel undoing 56 screws is a little work with an electric screwdriver but it is not difficult. On the other hand, undoing a couple of impossible to reach snapfittings in exploding plastic....... 56 screws to remove what is one of the most-replaced component on a lap-top. The keyboard on my Compaq requires 0 screws to replace. It takes less than one minute. |
#93
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aluminum machining? A q that is technical but not bicyclic
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#94
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aluminum machining? A q that is technical but not bicyclic
"Still Just Me" wrote:
On Mon, 27 Oct 2008 04:19:44 GMT, Ryan Cousineau wrote: I think RBT posters would be pretty happy if they had their spokes fail as rarely as laptop keyboards. Laptop keyboard failures are more common than you think. My last laptop died due to hinge failure. -- Tom Sherman - 42.435731,-83.985007 If you are not a part of the solution, you are a part of the precipitate. |
#95
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aluminum machining? A q that is technical but not bicyclic
Carl Fogel wrote:
Can anyone think of an even faintly similar piece of equipment that requires 56 screws to restrain it? .... Imagine the RBT reaction to a modern bicycle that used 56 screws to hold something as small and lightly stressed as a laptop keyboard in place. If you break one or two screws off in servicing the thing, I bet you can get away without figuring out how to drill out and Helicoil a size 000 thread. Fifty-four fasteners will probably do the job adequately well. Chalo |
#96
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aluminum machining? A q that is technical but not bicyclic
Carl Fogel wrote:
Can anyone think of an even faintly similar piece of equipment that requires 56 screws to restrain it? .... Imagine the RBT reaction to a modern bicycle that used 56 screws to hold something as small and lightly stressed as a laptop keyboard in place. If you break one or two screws off in servicing the thing, I bet you can get away without figuring out how to drill out and Helicoil a size 000 thread. Fifty-four fasteners will probably do the job adequately well. Chalo |
#97
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aluminum machining? A q that is technical but not bicyclic
On Mon, 27 Oct 2008 21:45:47 -0700 (PDT), Chalo
wrote: Carl Fogel wrote: Can anyone think of an even faintly similar piece of equipment that requires 56 screws to restrain it? ... Imagine the RBT reaction to a modern bicycle that used 56 screws to hold something as small and lightly stressed as a laptop keyboard in place. If you break one or two screws off in servicing the thing, I bet you can get away without figuring out how to drill out and Helicoil a size 000 thread. Fifty-four fasteners will probably do the job adequately well. Chalo Dear Chalo, Our great grandfathers applied the same theory to Humber highwheelers and their spokes, with a note of caution: "Pern Coleman, whilst ferreting about amongst the trees, struck a path with a good surface just wide enough to ride upon. It was good fun dodging the roots underneath and branches overhead, but just as we were getting out of the wood a shout from Pern showed it had not been quite so funny for him, as a spoke had gone. One spoke more or less in a 'Humber' is not worth consideration, but when one starts others are so likely to follow that for the remainder of the journey steady riding over rough ground was necessitated." --London Bicycle Club Gazette, 1879, p.249 http://books.google.com/books?id=enF...er#PPA2 49,M1 Dodging branches was important on highwheelers, whose riders towered well above even your height. Cheers, Carl Fogel |
#98
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aluminum machining? A q that is technical but not bicyclic
Carl Fogel wrote:
"Step 33. Wow! What an incredible machine. We are very impressed by the ease with which the new MacBook Pro came apart." http://www.ifixit.com/Guide/First-Lo...nibody/Page-11 It takes 56 buttons to keep the emperor inside his trousers? There are lots of laptops with perfectly usable, durable keyboards. I used to think that about all computers. A keyboard's a keyboard, what's the big deal? (It helped to not get too attached to such things when they had to deal with the harsh realities of life in a machine shop.) But my 17" Powerbook G4 has a nicer keyboard than anything else I've tried that was made in the '00s. Anytime I have to mess with somebody else's computer, if it's not a Mac laptop I am struck by the overwhelmingly crappy feel of the thing. I'm sure that there are nice-feeling keyboards out there-- I remember them from when computers operated alongside typewriters and had to withstand comparison-- but I have not run across one on anything but a Mac for a long time now. There are a number of things I can fault my computer for: flabby case, disturbingly hot spots on the case when running video or solid modeling CAD, chintzy video display cable, dumb fastener locations that require too much disassembly to do some kinds of service, needlessly tiny screws, probably some more stuff that doesn't spring to mind just now. But the keyboard is the bee's knees. If the new version is even better, I reckon it's worth whatever number of screws they care to throw at it. Chalo |
#99
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aluminum machining? A q that is technical but not bicyclic
On Oct 27, 12:54*pm, Still Just Me wrote:
(I idly wandered): I guess I'm not much of a Believer, either. I really need to go play with a Vista machine and see if I'm still allergic. (SJM nicely brought me back to reality): Vista sucks. XP is a better OS for people who do real work. Thanks, I needed that. --D-y |
#100
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aluminum machining? A q that is technical but not bicyclic
Ryan Cousineau wrote:
I have a bit of an odd question with regard to laptop manufacture and aluminum machining. It's essentially one of curiosity, but I think a few people here may have some insight. If you don't know, Apple just introduced some revised laptop models. Great new features, bold design, whatever. The feature that made me sit bolt-upright and say "no way!" was the case structure. The old MacBook design used plastic molded cases. I think there might be a metal inner frame, too. The "Pro" model used aluminum cases, but I'm virtually certain they were stamped, and I think they relied on an inner metal frame as well (depending on the year, these frames were made out of aluminum or magnesium, I think, and presumably cast, but possibly stamped). This year's models are all sporting machined aluminum cases, and apparently have no inner frame to speak of (they call it "unibody" a la modern car designs). It appears the major components bolt more or less directly to the body. Web page here, including video of what may be actual manufacturing techniques and pictures of the bare case: http://www.apple.com/macbook/design.html It's a clever idea, and I can see benefits. But just watch that production video! How in the heck can they be doing CNC machining in a production-line fashion and be cost-competitive? I would have thought the cost and time (and manufacturing capacity?) would have been prohibitive. Anyone here have an insight as to how they're doing this without spending way more money than when they were molding cases out of plastic? I think these laptops are probably being made in the PRC, though there's a small chance this is a Taiwanese product. I mean, Apple's not crazy, so I assume this will all work, at least in theory, but when did machining costs and capacities get so cheap that they could conceive of milling out several million complex case designs every year? My bud said that his new Macbook runs significantly cooler (as in less hot) than past models. Just sayin'! -- Paul M. Hobson ..:change the f to ph to reply:. |
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