Report of the last classes

photos when we thermoform our cars..

Report of the last to classes

The last two clases we thermoformate our car, and paint them. Then we made the survey and analyze the results.

The questions where:

1. Consideras que este auto es más apropiado para:

a)ciudad b)campo c)carreras de

2. ¿Cuál sería la mejor descripción para este auto:

a)elegante y sofisticado b)juvenil y deportivo c)común y básico

3. Prefieres que sea:

a) Cupé b) Descapotable

4. Te parece que el diseño es:a) Moderno b)anticuado c)moderno pero retro

5. Consideras que es más apropiado para:a)mujer b)hombre

These are our cars..

And the results..

Class Report 25.03

Z print

Last we learn to program and use the Z corp. Printer
The first thing to do is to open a file but must be a .stl file. Then, the file must be validated and mustn’t have open edges because these can alter the results of the printing. Like if you want something hollow you would obtain a solid object, so this is important to check it. If the file has holes, it will appear black areas on the file. And also could not print it.
Then it is also important to check the units whenever you are exporting the file. And you can adjust it, so if the part is bigger than the base of the machine, the program will tell you and can scale your file. If the object that you are going to print is too big, you would have to cut it in 2 parts. After exporting and adjusting thing the file you have to justify it at the bottom, down and the left corner.Then you have to select the printer: *file-3d print setup…And select -serial port.
Before printing it is important to check the powder level, it has to be at the level of the base. This printing has the possibility to print 2 parts in the same file and at the same time, but you have to be sure that these ones do not intersect between each other.
Also the program tells you approximately the time thaht it is going to take for printing. -File -print time estimated

The machine has a control panel were you can move or chance the powder and depth. While working with the powder there are some tools like a spatula, colander. Every time you are placing powder you have to strain it, because most of the times it is reused and could have parts of a printing.

After printing, you have to leave the object inside for an hour and then, 30min outside resting. Then you have to blowing it in the compartment besides, using a blower and a vacuum cleaner. It is important to use the blower not to near because could brakes the piece. Finally use a small brush and “varnish” it with resin (40%) and hardener(60%). You can put it just a layer or maybe two but after it is dry.

11/03- 18/03 Classes

The last tow classes we prepare our files, and progan them in order to use them to print on the CNC Roland Printer.

First, after validating them on the Viscam View program each of the team select one of their 3cars design.

We convert the curves or surfaces into meshes adn save it as .stl (stereolithography). Then we save together the 3 car in the same file.

Then we program the file in the Modela Program and finally print it.

After having the cars printed now we have to sand them and thermoforming, and then we have to make a survay abour the desing and others characteristics.

Car and models

This is the car that our team is going to model

In this first model, after validating it, I saw that there are unmatched edges and also that the normals are in different directions, for example the stapes (estribo).

As in the model 1, in this model 2 occurs the same, of the normal, and the adges. the difference in design between the model 1 one and model 2 is that the back of the last one is more rectangular.

In model one also the direction of the normal is different, as you can se in the "estribo" and the windows. Also there are some unmatched edges

Report Class 25-02-09.

Last class we saw how to export our files. When we already have our volume or model and we want to export it in order to 3D printers, there are to ways to export it.
First you select you model and click “file”-“export”-“ estereolitography”- “Preview” and you model is formed in a triangle way. Then in “options” you can determine the mesh-“refined mesh”- “binary”-and “accept”
The other way is to select the model, write “convert to mesh”, speblish the number of polygons (medium) and “accept”.
Then we learn to validate our model using VisCam, located in Marcam Engineering. This program helps to prepare our files in STL for rapid prototypes.
After saving your files, you open it in this program and check if it has unmatched edges. If you have it you can’t print it. It is important to know that the tolerance of holes and edges is prox 20. But for CNC this tolerance is not so important because it just work with surfaces.
Then, by using another program named MODELA player 4 you can print in 3D.
First you have to be sure that the Roland 650 is connected. Open you file that is already is STL file. Then you have:
To select the material where you are going to print
To configure the model
To verify the scale and units
To select the origin of the model where is going to start (at the middle)
To select how the machine will work (this machine work with 4 axes) *it can turn the object backward
To choose your tolerances
Then the printing is taken in 4 stages. Each time you establish a stage you have to click on “new process”. You can determine the tool that will be use, the depth, and all the aspects that are important in order to accomplish the print in the best way.

Report of the class 18/02/09

Last class we started to model the car, using the 3D printer files as a path. While modeling we put these files in another layer and block it. Then started to make curves, using the top view in order to create the basic form of the car. For this exercise we use an application called "project in plane c", this help to create curves in just one plane. Then we do the same exercise but now in the lateral view.
At the end, when we already had the curves needed to create the surfaces we use the application called “barrido por dos carriles”

Union

Digitizer 3D and Roland

Class Report (28/01/09)

Last class we saw another program of 3D scanning, called Dr. Picza. This scaning sorfware works with a needle that detects the shape of the object that is scanning.
Also we learn how to use it.

Establish Control x,y,z axes, it has a certain depth
Select the scan area by moving coordinates or by moving the area
Select quality
1. Prepare the object,
2. Select y, then x, then z
3. must be were the coordinates start
4. Select the top, then click on accept (límite superior)
5. Test , and scan
6. Wait, it would tell the time that it takes
7. Click “File” then select “export” to different programs

After scanning an object you can save the file and open it in rinho or you can use that file to print it in a 3D printing.

Report of the class(21-01.09)

Last class we talked about the different types of 3D printing machines, their characteristics, pros and cons, uses, how they work, the different materials and mechanisms of each one..

Also we had a demonstration to know how to use a 3D digitizer. It can be used in Rhino, and in this program you have several options to digitize and object, for example by points, interpolate, planar section curve, and others. This 3D digitizer function with a pen that is the one who scans, and a pedal that starts, ends, and cancels the digitizing. A recommendation while digitizing an object is to path it, with several lines in order to go straight.

Thinking In Prototypes

The article named Thinking In Prototypes talks about some of the processes that we need to take in account when we create new designs. Some of these processes are to prove and to demonstrate that these new designs accomplish their function. It is so important to prove them in order to make some chances and to improve their function, ergonomics, aesthetics, and all the aspects that are needed to take in account while we design new objects. So, when we verify a new object we can prove it with a random group of people; it is so important their opinion because after all, Industrial Designers design for that market.
Like it’s important to verify new designs, the Design Process has evolved over time. Examples of this are prototypes; some years ago prototypes consisted in drawings, and making a real prototype involve a lot of time and sometimes it couldn’t get the same object that was in the drawing, so it wasn’t enough. Then it can be able to do renders or 3D drawings and these was so much better because it is possible to look around all the object, their different views and how it works. This also improves the real prototypes because now with these programs it´s easier to understand how to make and how a new design works. And now, we have the possibility to make real prototypes while we use a 3D design program (CAD- Computer aided Design); this helps to understand even more the function, the design and the shape of each piece of a new object, and also if the design concept is mechanically viable.
Physical prototypes also know as rapid prototypes, helps designers to flush out mistakes in less time, and this also contribute to speed up the design process. As it’s faster, it´s less costly. These prototypes don’t confirm you that it won´t be any error, but help you to identify earlier the different errors and after a processes of trial and error…at the end the design will work out in its best way. Each time that we modify a design it must be proved, because maybe when we modify some part or the design another one could not work anymore. That’s why designers have to verify their design as much as they can, even more if the design involves the secure or the people; as it says in the article...if you don’t try, you will fail. Rapid prototypes help designers to understand not only the design or the function of an object, but also the shape, texture, size, and all this factors that deal with the concept of a new design.
Finally, the article says that each designers need to prove their own design in order to verify it, but it is important to put their shoes in the user’s shoes, like if we don’t know a the purpose of a design in a deeply way.