After we scanned the car upstairs, we started to trace lines so that we can model our car in rhino.

the last two classes we learned how to use both machines to scan our cars. Basically, we had to scan our car, and in that process learn how both machines work.
Here are some images of the process:

About the presentations

SLA: Stereolitography
-Rapid prototyping
-1986 Charles W. Hull
-Prints thin layers with the ultraviolet laser
- You need a CAD program
- High accuracy, high surface quality
-Different materials
-Small prototypes
-The resin used for this prototypes is expensive ($400 per galon)
-Little tolerance
-Medical models
-Most widely used
-Requires post curing
-Support structures are required
-Odonthology: models of teeth

FDM: Fused deposition modeling
-Layer by layer
-Plastic filament or metal
-The material is melted
-You can use several materials depending on stregh and temperature resistance
-there are 4 kinds of FDM depending on the volume of the object

OPEN HARDWARE:
-Scial movement. Ideals of the 70´s
-People interested on tecnology created new devices by combining pieces from other different companies
-Replicated accesories
-REPRAP Machine
-Materials you can use:
-thermoplastic
-ceramic
-Icyng sugar
-silicone
-chocolate
-"Home printer" : cheaper than industrial maquines
-FABAHOME: project dedicated to this. You can build the machine at home

SLS: Selective laser sintering
-Rapid manufacturing process
-Speed and cost: advantage
-Industrial aplication: military-aerospace
-Automotive, sports, jewelry, dentistry
- use of some powder
-the waste of powder can be udes again
-Objects with accurate details
-Durable, funtional parts
-Material options:
-Nylon
- Glass filled nylon
- SLS FLEX
-METAL
-Fast
-cheap
-no support structure necessary
-You can produce parts (real ones) apart from prototypes
-density may vary

Thinking in prototypes

I found the article quite interesting because I didn´t know how common was to make a rapid prototype now a days.
A rapid prototype helps you to understand better how is the object and how to use it. To experience that with a rapid prototype it´s like drawing in 3D, something I though was a little bit far away.
The artycle also said that this kind of prototyping has compressed the design cycle but not abolished it. You have to continue doing the process of design because that´s the best way of getting a good result. If you try enough things, something will work out.
Rapid prototyping has replaced screen renders because, seeing just an image isnt enough anymore.
I think that this kind of tecnology will help designers to comunicate better their idea. For me, to learn how all this works, and to actually use it is something I´m really exciting about!