surveys and results

We make surveys to see which car was the bets forthe task. And this were the results:

Painted cars

We painted aour cars and put them in the chasis to get them ready to the surveys..

This is how our cars look like:

MDF & PET cars

Our cars finally were finish and this were the results we obtain ...

They look a little rough but the next step was to give them a hand and get them ready for thermoforming...

This is how they look ready for thermoforming..

..And here are some pictures of that process.. we used pet to thermoform them ..

That class we just dedicate to the thermoforming process and it was really quick and easy... the results were perfect, and the cars look just ready for the next step.

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Here they are locating the pet in the plataform to heated and get it ready ...

And the final result of the cars already form in pet...

Our cars

We review our file for the roland because today we have our turn...

We had a little problems programing because our pieces are a little to big, but we finally did it and now we are just waiting for the machine to finish.

Fer was fixing the base, making sure it was high enough.

machine was checking surface before starting our file.

Z corp printer

Z print

We learn to program and use the Z coorporation printer

First step is to open an stl file.
Make sure to check the units whenever your are exporting. The should be the same. as your stl file.
If the part is too big the program will tell you to scale your part, and if you are not able to do it maybe you will be in the necessity of cutting your part in 2.
Make sure your part when you justify it its on the bottom and in the left.

Go file 3d print setup, for selecting the printer. Choose serial port.
Check the powder level
How much powder is in the machine, if it is enough or not …
The section is in service: check powder levels.

You can print 2 parts in the same file.
Black areas on the files means that there are holes on your part and the machine is not going to print it.

File print time estimated.. and the its going to tell you the aprox time is going to take the machine to print your file.

These is the control panel of the printer, here you can move, chance powder and depth to your peice.

these are some of the tools you need when you are working with the zprinter. For removing or aplying the powder, etc.

this is how the zprinter looks from the top, that white panel is where the powder remains, and where your file is going to be printed.

we make the programation of the file for the cnc roland and make our appointment for the same machine. everything elses was done. we justa need to wait our turn

Renders

1.-

2.-

3.-

For this session we had to make some renders of 3 different proposals for our car.

this is what i get.

validaciones

This images show the validations made on viscam view, the yellow lines show that the edges are not close.

Validaciones de modelos

Estas son las validaciones de los modelos que hice para nuestro carro..

las zonas rojas indican que las normales tienen el mismo sentido

Viscam View

VisCAM is the ideal software solution for the complete preparation of your STL files for Rapid Prototyping. Moreover VisCAM offers you optimized solutions for all steps of the RP build preparation.

How to use it?

You have to check on the chart of info if it does have unmatched edges... this is important because if you have unmatched edges you cant print. your tolerance of holes and edges is around 20. (viscamview helps you to see if your modeling object its close)

note: for the cnc is not that important because it only work with surfaces.

The program show you where are the inperfections that you must change.s

Set up the machine and ur model make sure that "roland 650" its conected.
make sure that the fale is saved in stl open your file
now you can visualize yur modeling in 3 views.
-In this case your working with mdf .. so choose the materail you are going to work with .. in case of mdf is chemical wood (soft)
-Configure your model. and opne window with info. verify your scale. ( units)
-You have to select the origin of the part. always in the middle.
-Now select how would the machine will work. this machine work with 4 axis.... (it kind of turn the object backward)


-Choose your tolerances. In the depth that will be trimmed exceeds the lenght of the tools, it is necessary to asaing a slope to avoid damages in the tool or in the machine.

-Prepare your surface. 1.- plane down (creacion de proceso nuevo) choose the drill your are going to use. (6mm)
It is possible to plane down the whole model or only a part of it
( choose interior de "forma de modelado")
Control the depth, where your model starts and finish. on the next section you can move the drill into a x axis, y axis, or both ( for the car model u need to work both)

I think it is important yo know this beacuse its the base for a modeling 3Dprinting, the step that allows us to modify our modeling and verify that is correct before we print it.

How to save a rhino document as stl. and for what

In rhino selected ur model and click export selection ...
select .stl and then save the file
it tells you the parameters of the object that you select.
Automatically it trianguilate the model ... it converts each plane into triangles.
choose binari beacuse its smaller (1kb)

Another way to do i t.. ( if your model its to complicated its better to convert to malles than export it as a stl. ( select melle) you can choose how many of them you want. you can preview to see if thats what you want.
the recomendation its starting with middle melles, so its not that heavy your file..

microscribe digitalizer

We learn how to use the microscribe digitalizer. The basic tools and a little bit of practice of how can we digitalize an obejct into the computer.

Steps

1. open rhino
2. Go to configuration
3. 3D digitalizer
4. select the microsrobe digitalizer option

There are somo basic tools that we must know as:

1. Curve with digitalize: Hold the right pedal whenever u want to digitalize. So u can scan … if its not hold it is not digitalizing
   
2. Mutliple points: every time u wan t a point u press the pedal and then release.
   
3. Planar section curve:
   -select first the planar point, then the second planar point. So u have an area to hold ur object.
   -Select a based plane. U can change the number of planes u want.
   
   
4. Interpolate points: each time u press a point it is going to join with the nearest point.

Prototyping processes

Fused deposition modeling
-Layer by layer
-Plastic filament or metal wore is unwound from a coil and supplies material to an extrusion nozzle.
-The nozzle is heated to melt the material.

Materials
-Abs polymer
-Polycarbonates
-Waxes.
Model is created in CAD. Send it to the machine.

Types of machines.
-FDM (200mc, 300mc , 400mc and 900mc)
-200 for office

Pros
Good for conceptual models,
Cost effectiveness
Cons
-Expensive


Laminated object manufacturing (LOM)

Rapid prototyping
Works with 3d models
Low cost.

-Layers of glue-backed paper from the model
-Raw materials is readily available
-Larger parts because it uses no chemicals ( no reactions involved)
-Outside model, cross-hatching removes materials.
-Before sealing models have a wood-like texture.
-Not as prevalent as SLS and SLA

How it works?
Layer fabrication with sheets being adhered to subtract with the heated roller.
Works with paper layers!
Models should be sealed with a paint or lacquer to block moisture ingress.
Strong as plastic or metal.
The paper is glue with heat. ( sinterizado)

Open hardware
Social movement, people interest on techonology created new devices byt the combination of pieces from other different companies.

Rep rap

Materials.
Thermoplastic
Ceramic
Icing sugar
Silicone
Woods
Chocolate

Its like a home printer…
Cheaper than an industrial machine.

thinking about prototypes

Thinking about prototypes is an interesting way of seeing how designers interact with their prototypes. And how this processes have been evolving along the years, they way they change from something rough to something more acurate to the "real thing". With technology and the designers experience prototyping has evolve rapidly in a good maner, before CAD printouts give the designer and the client a good idea of what their new design would looks like, but with quick prototypes as stereolithographic ones make it more real.
With this kind of prototypes the designer can actually touch and feel every single part of the prototype and intereact with it as the real product in proction, so that they can have a better idea of how things are going to be.


Is important to say that even if its a prototype, designers have been trying so hard to do it by the fast and the better pad without making so much trail and error, beacuase that makes it a waste of time and resources. "Find out what works and stop doing what doesnt works. "
There are many methods that a designer can use to make a prototypes but nowadays it is important to make them the easiest and quickest way without disaprobing the quality at all.

Hola a todos!