2. Digital Scripts: Beginning the Modeling Process
This is the machine that drives the 3D printer, and you're looking here at the status of what the printer is actually doing - one of the layers that it is printing. We'll take a closer look at it. The file is this one here, and it's a three-dimensional file. [We] save it as a what is called a STL, which stands for "stereo lithography". That contains information for the surface generation triangulated surfaces that are going to generate a solid modeling. What we see here is a plan view of the model that is being currently printed, and this is a side view. We see also here a three-dimensonal view and I'm just going to rotate for you to understand what this three-dimensional object is.

3. 3D Printing: How the printer works
This printer works with a very particular technology. It's name is Seacorp (sic), and it uses powder. In this case, we're using plaster. What the printer does is it takes... it has a feed tray, and it has a building tray. The feed tray lifts up and takes materials and this cart just spreads thatmaterial over the building tray. And... then you will see here on this side like a little pointer that is spraying out the... a liquid that is going to bond together the parts that need to be built. So, this is like paper-thin layers that are being built one-by-one. The cart goes back and forth and what we see here is this pointer deposting this liquid like a spray on only the parts that need to be solidified. The rest of the powder remains dry and it serves as a support for the upcoming layers.

4. The Physical Models: The end result of 3D Printing
The final output of this is a model like this one - what we see here. In this case, this model was outputted, and this is a solid piece... It's a little bit brittle, but, nevertheless, a solid piece that's been taken out of the machine. Without this machine it would be very hard and difficult to have a model like this one. In addition to that, we see here another model - another set of models that have been printed from this machine. You can all see that this piece would be very, very difficult to cut... from flat pieces and [then] assemble them together.

5. Finishing Touches: Cleaning off the excess plaster and toughening up the models
One last feature of this is a what we see here is the cleaning machine, in which we take the dust off, or the remaining of the dust from the printer. And here is a little oven in which we have hot wax which we use to cover the printed parts. They are submerged in the hot wax and taken out and once they are dry they become much more stiff and solid. The wax also protects them from excess of moisture that could damage the prints.

6. Sample Models: Printed using this technology
On this table there are some final... models that have been printed. And, again, all of these come from the computer directly generated through the three-dimensional printer.