Woman's jaw reproduced by 3D printer

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Woman's jaw reproduced by 3D printer

Post by taerKitty on Wed 8 Feb 2012 - 12:09

A Belgian company created a titanium jaw using 3D printing, this time with titanium powder and a laser. 33 layers per 1mm. The finished product was topped with a 'bioceramic coating' probably to help muscles bind to it.

Read the ZD press article here.

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Re: Woman's jaw reproduced by 3D printer

Post by Nachtsider on Wed 8 Feb 2012 - 12:37

To date, I still have no clue how a 3D printer works.

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Re: Woman's jaw reproduced by 3D printer

Post by taerKitty on Wed 8 Feb 2012 - 12:54

It just prints, and overprints, and overprints, each time a little thicker. With the titanium jaw above, each layer is appx 0.001" high. A commercially available 3-D printer is the MakerBot. Here's a video of it printing out a bust of Stephen Colbert, time-lapsed.


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Re: Woman's jaw reproduced by 3D printer

Post by Alfisti on Wed 8 Feb 2012 - 16:56

Awesome, I'll have to have a read when I get home or over the weekend.

@Nachtsider wrote:To date, I still have no clue how a 3D printer works.
It depends on what process you're using. The SLS (Selective Laser Sintering) machines we had at university used a powder medium. So they'd have a vat of powder which would put onto a work platform in thin layers and a laser was then used to bind the appropiate bits together (taken off a 3D cad model). When it came time to get your "print" out you vaccumed away the loose media leaving the sintered component. I imagine the titanium version works in a similar manner.

SLA (Sterolithography) machines use a liquid media. So instead of laying powder down they have a descending platform in a tank of UV light reacive fluid. It builds up each layer by using a UV laser to harden the liquid. The downside of SLA machines is that because it is a liquid medium the machine has to build supports for any parts of the crosssection which aren't immediatly attached to anything, which will need to be cut away later. The upside (at least my understanding is) that SLA machines can be made much more accurate than SLS machines and the models are generally tougher.

There's also a string machine (can't remember the technical term) which builds up the model litterally from a resin-infused string... thsoe are good for doing thin-walled items like jugs. There are a few others but those are the ones I can remember.

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Re: Woman's jaw reproduced by 3D printer

Post by Awinnell on Wed 8 Feb 2012 - 16:59

piratebay now has a 3d printer model schematic download section

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Re: Woman's jaw reproduced by 3D printer

Post by ElfenMagix on Thu 9 Feb 2012 - 0:42

They are already doing that with living tissue and stem cells, building whole organs (at the end of): http://www.pbs.org/wgbh/nova/body/replacing-body-parts.html

But I will admit, I am impressed.

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Re: Woman's jaw reproduced by 3D printer

Post by taerKitty on Thu 9 Feb 2012 - 2:41

Yes, but this gives them TITANIUM bones on which to string the muscles...

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Re: Woman's jaw reproduced by 3D printer

Post by Alfisti on Thu 9 Feb 2012 - 4:08

@taerkitty wrote:Yes, but this gives them TITANIUM bones on which to string the muscles...
Titanium sure, but I have trouble believing that titanium sintered from a powder medium will have the same physical qualities as the same piece machined from a billet. I know the components our SLS machines spat out were quite fragile and neede to be soaked in a bonding agent (read: superglue) to reach a decent strength. While I doubt the titanium jaw will be quite that weak, I'd still be interested to see how the powder and layers of the rapid prototyped component have bonded together on a molecular level.

I'm not saying it won't be strong, but that it probably won't be as strong as the phrase "titanium bones" immediately brings to mind.

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Re: Woman's jaw reproduced by 3D printer

Post by taerKitty on Thu 9 Feb 2012 - 9:47

Sob...

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Re: Woman's jaw reproduced by 3D printer

Post by John_234 on Wed 27 Jun 2012 - 3:33

People take for granted how tough our organic structure is.

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