Computer-Aided Design

Second week Assigment

 For this week, the assignments to be accomplish are:

• Drawing using 3D 2D softwares
• Draw using parametric design
• Using a 3D modeling software
• Use a new program

DRAW USING PARAMETRIC DESIGN

 When Neil gave the example of the rivets on plane where has thousands of rivets, how do you change the design without to having to change each individual rive?
Welcome to the world of “Parametric Design”, so, instead of changing each rivet you parametric design them in advance so every time the design needs to be changed you can add constrains or variable to the size of the rivet and by changing those constrains, the change will propagate through the entire model.
In FabLab Seoul we make all our furniture but the most important part is that we try to recycle or use the left over, problem with that is the sometime is difficult to control the size that we will end up with, because every time we want to re create sometime we have to think how big is the piece of material to use and then start drawing.
To make a parametric design in Fusion360 we can help our selves by using two tools, parameters and constrains.

• Making some parametric constraints on Fusion360



In the Parameter's window you can hold a variable number that can be call at any time to set a number, for example, "tichkness of the material", so when you start drawing any design and the thickness needs to be adjusted instead of changing 5mm thickness in each piece you can just name the material "thick" and that variable will contain the number on the parameters list meaning that when you change the list number for "thick" variable any lenth that has that number will be change. Here is a very useful link click for parametric design

• Creating Parameters

In order to add a parameters in to a variable just enter the information needed.
"Name" (name that will be called instead of a number), "unit" (measurements units like inches, centimeters, mm, etc..), "expression" (value, number designated to the variable), and lastly "comment" (put something that will help you to remember this variable)
Another very helpful thing to learn is the constrain that you can set up while sketching so will maintain the desired shape even is you change the parameter's values this link can give you powerful understanding on how to apply constrains to create parameter design in Fusion360

• Creating Constrains








Pros and Cons about Fusion360

• Not for begginers
• integrates 2D, 3D, rendering and CAM
• Powerful tools
• Big community behind the program
• Bright Future

USING A 3D MODELING SOFTWARE

  For the 3D modeling software I used the trustworthy 123 Design excellent for begginers and very intuative; However, I think that this will be the last time using this program since Autodesk just announced that will no longer support this pragram from this year.f

• Sketching/Modeling the Final Project










Downloads

• 123 Design file
• Illustrator vector bluePrints
• stl for 3D printing

Lessons Learnt

  What I was not able to do this week:

• Use the programs suggested by Prof. Neil like openskad
• use more parametric design
• being able to conplete the whole table including the legs

  What I did but need to get better at:

• Draw a parameter design in Fusion360
• learn how to link file to my website
• Sketch a Final Project
• be more organize with the img and files in my Git repo.

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