Week 2: Computer-aided design



Individual assignment: model (raster, vector, 2D, 3D, render, animate, simulate, ...) a possible final project, and post it on your class page


Rhinoceros 6


I never have used 3d modeling programs. I started searching for a 3d modeling program and I found Rhinoceros 6. I did not have any particular problems with it's installation and I searched for video tutorials to start modeling something. I found this useful video to orientate myself on the Rhino's interface. Then I selected this tutorial and I followed it step by step.

The first step is to create a cylinder from which the glass will then be made


Once the cylinder has been created, select the surface that you want to modify by holding down control + shift and left click. In this case I have increased the size of the surface to give the shape of the glass



At this point with the shell command you can remove the desired surface and create a container, so I selected the top surface and I ran the shell command.


It is possible to increase the thickness of the bottom of the glass by selecting the inside and raising it.


At this point to finish the glass it's possible to use the edge softening feature in properties, by clicking on it's possible to decide how much make the edge thinner.


To render the object, you can use the raytraced function in display, then select the material in which we want to make the object, in this case glass.


And this is the result.



Update 26/02/2018:Grasshopper



Grasshopper is a graphical algorithm editor tightly integrated with Rhino's 3-D modeling tools. I was curious to experiment with this modeling mode but I only had a taste of it, because then I got stuck in one step and I did not go any further. Below I have documented the various steps that I followed in the tutorial.

I did double click on the background and searched the points of origin and the move command and I connected them together.


Then I typed x and selected unit x and I connected to move point.


I typed 4 and selected number slider and plugged this last section in unit factor x.



Meanwhile on Rhinoceros 5 has appeared a figure...


Then I connected geometry move with geometry rotate , searched for radians ,typed 60 and selected number slider , linking this last section in degrees . Then I linked radians with angles in rotate's section.


I typed xz and connected the part of the plan in the rotate section. Then I clicked with the mouse wheel on the xz plane and I selected disable preview .



Then I duplicated the rotate section 3 times and placed the various parts as suggested by the tutorial.


Then I connected the geometry of each section to the next.


I watched what was happening on Rhinoceros and I realised I hadn't changed the value of the corners (60 for the hexagon and 90 for square) so I changed the value.



I typed lines and selected the option to create a segment between two points, then I multiplied the section three times and connected geometry points and angles as in the image below



Looking better the tutorial I realised I have created a section rotate in excess, so I deleted that and I connected better the parts...


...and this was the result on Rhinoceros


Solidworks


I used solidworks for the following weeks:

Week 3

Week 7

Week 9

Week 14

Week 16

Inkscape


It's time to experiment with 2d software. I chose inkscape because it seems nice enough to use. I followed the official page tutorial and this is what came out.



Following the suggestions of the tutorial I used the various molds





The most frequently used Inkscape tool is the Selector, so I used it to move and modify my images.



Scale the object by dragging any handle. (Press Ctrl to preserve the original height/width ratio.)



If you click on the figure holding down ctrl you can rotate it dragging corner handles.



One of Inkscape's features that set it apart from most other vector editors is its emphasis on keyboard accessibility. So I tried the option to scale using the keyboard Ctrl+> and Ctrl+< scale up or down to 200% or 50% of the original, respectively. Default rotates are by 15 degrees; with Ctrl, you rotate by 90 degrees.





Then I tried the grouping command with ctrl + g





One of the most common operations is duplicating an object (Ctrl+DI), so I tried it



After these various tests I used inkscape also for the machine design week