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Writers Are Getting 3D Printing Wrong

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bobjengr
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Platinum
Re: Cost Analysis
bobjengr   12/6/2014 8:57:03 AM
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Critic--I agree with you completely on this one.  Just because we can doesn't necessarily mean we should.  Years ago when "additive" manufacturing was introduced, it was touted as being a possible answer to quick parts to verify form, fit and function.  Parts to provide "design guidance" and possibly "design confirmation" so traditional methods could be used to manufacturer product.  The ability to use components in working assemblies results from great improvements in material science.   I look upon 3-D printing as a viable option to manufacturing and certainly not the only possibility.

Excellent post Chris.

Larry M
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Platinum
Danger
Larry M   12/5/2014 9:05:25 PM
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Those who can't write realistically about 3D printing probably lack an intuituve insight into stress, strain, and strength of materials. Such an individual might be tempted to replace a broken or scratched bicycle hand-brake handle with a printed version. The results could be horrible.

bob from maine
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Platinum
Re: Mixed signals
bob from maine   12/5/2014 4:16:07 PM
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I haven't read any articles on 3D printing that are patently wrong. Most of the articles are speculation about "what if?" and not "what is". I interpret most of these articles as a solution looking for a problem. The proliferation of 3D printers that can provide usable output made of robust materials suggests the future is bright, but it by no means offers a threat to any portion of the engineering community. Regarding old cars, I have carved parts out of wood, clay, plaster; molded them out of fiberglass, sillyy-putty, bondo, carbon pre-preg, anything available for my cars and tractors, but in the end, the real part found after months or years of searching is the only one that should be used. A repop of an old part is not the real-thing and generally doesn't enhance the value of the car at all (yeah, I'm an antique snob, if it ain't right, it ain't goin). I don't see 3D printing as a desirable substitute - yet!

Critic
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Platinum
Cost Analysis
Critic   12/1/2014 1:32:54 PM
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Writers seem to ignore the costs of 3-D printing.  3-D printing is great for making small quantities of special parts, but is usually not the best way to make large quantities of anything.  Just because we can 3-D print something, doesn't mean we should.  Items like paperclips or machine screws, for examples, are better manufactured using other technologies.

Pubudu
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Platinum
Re: Mixed signals
Pubudu   11/29/2014 2:45:12 PM
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And also Anandy , to having a 3D printer at home for pint the parts that you want is not seams to not like a good idea.  Best place it to have that body parts printer is with the parts shop. 

Pubudu
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Platinum
Re: Mixed signals
Pubudu   11/29/2014 2:40:41 PM
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Anandy The good news is reducing the price of the part and the bad news is it will true only for the single material part. 

William K.
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Platinum
Re: Mixed signals
William K.   11/28/2014 5:09:28 PM
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The area of automotive parts where 3D printing could be valuable is in the restoration of old cars. Trim and ornaments for starters and then some of those suspension parts that cost way too much to get machined. Possibly it would be good for a few just plain old car parts as well, if there is no better source.

BUT every part needs to be designed, and the original writer should know that just because a part is drawn does not mean that it was engineered or designed. A whole lot of people are intensely clueless in thatr area. 

3D printing is indeed a neat tool to have, but like all other tools, by itself it is of marginal value. It still takes both skill and understanding to do things right. That won't change no matter how many great tools we get.

patb2009
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Gold
3D printing is big
patb2009   11/27/2014 11:18:16 PM
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it still needs to find it's home market.

 

but  laser printing took a while to take

fdos
User Rank
Iron
Re: 3D Printing Awareness
fdos   11/27/2014 10:22:20 PM
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@andyk1: Yes , 3D printing has a great future ahead and already started with a bang. I also don't see why they opt for something like that. 

andyk1
User Rank
Iron
Re: 3D Printing Awareness
andyk1   11/27/2014 3:22:49 AM
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Greg,

The field of 3d printing a bit more complex than what you're describing. There are 3d printing who printing in strong metals , and it's already used sucsessfully for applications in dentistry and aviation and others. Andwith regards to cost, because 3d printing is less limited in what it can make than other manufacturing methods, it's sometimes  more cost effective (or the parts perform better) than non 3d printing. And there a new methods of 3d printing , or techniques(availbl or indevelopment) that combine 3d printing with cnc or with injection molding that can toghether are cheaper than manufacturing in volume,at least to low/medium volumes.

In general,once i was none believer in the general vision for 3d printing, but after reading about all kinds of crazy innovations being worked on in this industry , and the amount of money/effort on r&d ,i think it's hard ot predict how far 3d printing can go.

And with regards t the "vanishing engineer" issue - yeh that's pretty absurd. Why would 3d printing do that ?

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