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CAD/CAM Corner
The Fun Side of 3D Printing
5/15/2012

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An 83-year-old woman suffering from a chronic bone infection received a lower jaw transplant of a 3D-printed patient-specific  prosthesis  made out of titanium powder as opposed to undergoing reconstructive surgery.   (Source: LayerWise)
An 83-year-old woman suffering from a chronic bone infection received a lower jaw transplant of a 3D-printed patient-specific prosthesis made out of titanium powder as opposed to undergoing reconstructive surgery.
(Source: LayerWise)

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Cadman-LT
User Rank
Platinum
Re: Metal
Cadman-LT   12/17/2012 7:03:51 AM
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It's kind of happening now I think. There are these CAD Engineers from school that know design so they CAD up a part and send the program out to the floor. Then the ACTUAL machinists say...I can't make this. The CAD guys have never machined a part in their life and have no idea of what they can and can't actually make. I think every designer should have some experience on the floor so they have some practicality in their designs.

Cadman-LT
User Rank
Platinum
Re: Metal
Cadman-LT   12/17/2012 6:59:42 AM
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cadcoke5...I could not agree more. Until you machine things and make them....you said it better than I can...but it gives you a certain knowledge of how things work that you can't and won't get from printing a part.

cadcoke5
User Rank
Iron
Re: Metal
cadcoke5   12/16/2012 9:14:12 PM
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The CAD and engineering guys don't have the same body of knowledge as a machinest.  The machinest has much better education and experience in regard to the real world. 

We can't all know it all. I think this pairing of theoretical and practical knowledge is something that can't be replaced by a new machine.  If it is attempted, then you end up with someone who makes designs that are much more at risk of being impractical or failing.

 

Cadman-LT
User Rank
Platinum
Re: Machinists
Cadman-LT   10/14/2012 7:42:45 PM
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It WILL replace some machinists. I disagree that CNC was doing that as I used to be a CNC machinist. CNC isn't as simple as printing a part.

kleetus
User Rank
Silver
Re: Machinists
kleetus   10/11/2012 9:30:51 AM
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It may replace some machinists... hard to say, but some parts just physically can't be printed because of sheer size and mass. But over time, this may be able to be overcome.


But hey... nobody really cried when the steam engine went away due to 'dieselation' of the railroads. I suspect this will be much the same. Heck, CNC was putting machinists out of work...

William K.
User Rank
Platinum
Fun side of 3D printing
William K.   9/7/2012 9:48:36 AM
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The big limitation that I see is in mmaterials, and the properties of those materials. Not that a creative person can't make amazing things, but the strength and other properties certainly does matter. Of course we can make models to use to make molds, but casting steel is still a big deal type of thing. Those 3D printers able to produce steel parts are beyond the range of most hobby type designers.

WKTaylor
User Rank
Iron
The Dark Side of 3D Printing
WKTaylor   7/20/2012 9:45:59 AM
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TED Presentation I wish I had NOT seen... but am better informed, now... 

Marc Goodman: A vision of crimes in the future

http://www.ted.com/talks/lang/en/marc_goodman_a_vision_of_crimes_in_the_future.html

Criminals may eventually use of 3D Printing [metal and plastic] to avoid smuggling weapons.

Regards, WKTaylor

Beth Stackpole
User Rank
Blogger
Re: 3D Printing Hobbiests
Beth Stackpole   7/10/2012 7:26:54 AM
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@cwarner7_11: Thanks for wading in with your perspective, which puts a lot into context given your familiarity and experience in the 3D printing world. I think your point about creating the 3D models (or the CAD requirement today) being an obstacle for the technology to mesh with the mainstream is spot on. That's what I continually hear from both users and the industry. But I think industry is well aware of the hurdle and is making strides to address. Check out this recent post on a couple of content creation tools that should help and I know there are more out there.

cwarner7_11
User Rank
Iron
3D Printing Hobbiests
cwarner7_11   7/9/2012 11:27:03 AM
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I recently built from a kit one of the RepRap filament printers to explore the technology first hand (I have actually been a user of rapid prototyping since the late 1980's).  The kit was comparable in price to the low-end Objet unit, but probably requiring more "tweaking" to get the results I would like to see.  Building my own machine was critical for me, in that I wanted to know how it works, not because of price...

1.  The technology is definitely priced at a range to develop interest in the "consumer" marketplace- when I think of how much I paid for my first laser printer or even my first inkject printer compared to what I paid for the computers driving them, the price of an entry-level 3D printer is quite reasonable.

2.  Materials are cheap.

3.  3D printing will never replace the machine shop (I have my 3D printer right next to my hobbiest lathe-mill set-up, alothough not in the same room- I think the 3D printer I built needs a bit cleaner environment).  The technology is complimentary.

4.  The real limitation to the home user adopting the technology is going to be the CAD capabilities required to get from thought to g-code (actually, once the model is built, generating the g-code is trivial.  Building the 3D model is the hard part).

5.  To really explore some of the things hobbiests are doing, one should visit their sites (i.e., "Thingiverse").  This is where the home user is going to be "shopping"- the designs can be downloaded in 3D models ready to print (of course, of varying quality and finesse, but still taking the major pain out of the process).

The "home user" is unlikely to want to print a full-size turbo-prop engine.  The "home user" is going to be more interested in printing cute little cartton characters for the kids, or custom jewelry, or their own "artistic creations".

Beth Stackpole
User Rank
Blogger
Re: Metal
Beth Stackpole   7/5/2012 7:31:55 AM
NO RATINGS
@3Drob: I like your point about the speed in which this field is developing. 3D printing and additive manufacturing have been around for a long time and have definitely made progress over the years. But there's been a lot of focus and excitement in the last two years alone--the last one really upping the ante in terms of lowering barriers to entry. I think a lot of that market attention has bred a lot of new developments and the cycle begins. Now that the technology is accessible to more people, there is more atttention as to how you can use it and that again, is driving new innovation.

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