To develop my ability to create 3D models for prototyping physical objects at medium fidelity, I took on the challenge of designing an object using each of the following primitive operations at least once: extrusion, revolution, and boolean.
For this project, I used Rhinoceros to create my model, then converted the model to MakerBot using an STL file to get it printed. To ensure usage of each primitive operation, I created 2 useful (in everyday life) objects: a business card holder and a pencil holder.
Below are sketches, 3D Rhino models, and final printed models of the business card holder and pencil holder. My models would not have been possible without the help of my extremely talented, Industrial Design friend, Ellen Huynh, who provided video tutorials to help me learn how to use Rhino tools and imagine 3D modeling.
BUSINESS CARD HOLDER
Figures 1 and 2. Initial sketches of business card holder ideas. I ultimately went with the first idea because it made us of the most primitive operations that I knew I could make (given no prior experience with Rhino or 3D modeling).
Figure 3. Screenshot of 3D Rhino file of business card holder. This model makes use of extrude and boolean operations.
Figure 4. Images of the final 3D printed business card holders.
Figure 5. Initial sketch of potential pencil holders. To make use of the revolve operation, I knew I wanted to make a cylindrical pencil holder because I could draw one side of the model and then revolve it 360 degrees.
Figure 6. Screenshot of 3D Rhino file of pencil holder. This model makes use of the revolve operation.
Video 1. Short video of 3D printing the pencil holder.
Figure 7. Final print of pencil holder next to business card holder.
WHY I CREATED THESE MODELS
Business Card Holder - A few months ago, I created business cards and have yet to find a place to store them. This project was the perfect opportunity for me to make something useful and functional.
Pencil Holder - I have a lot of pens, pencils, markers, highlighters, and etc. and never have enough storage to organize them.
The biggest challenge in this project was learning how to use Rhino to create the 3D models because the software is so complex and there are so many features that I didn't know which to use or how to use them. I didn't know the terms accompanied with each operation in Rhino, so it was difficult to identify what I needed to make a certain gesture.
WHAT I ENJOYED
I enjoyed making my sketch come to fruition in Rhino, and then to life in the 3D printer. Because I had no prior experience with Rhino, it was exciting to be able to extrude, filet, boolean, revolve, and shell my model to exactly how I imagined. Now that I have a better idea of the process of creating 3D objects, I'm excited to come up with more designs and watch them come to life!
PROS/CONS OF SOFTWARE USED
I used Rhino(ceros) to 3D model my objects. Having no prior experience to 3D modeling or Rhino, I had a steep learning curve and encountered very few tutorial videos to help me understand how to use the software or its tools. It was challenging to imagine 3D objects and even more challenging to realize what tool to use within Rhino to enact certain operations.
Pros: step-by-step command ribbon, shaded/rendered views, 4-view screen, lots of operations, universal software used among professional industrial designers
Cons: limited video tutorials, steep learning curve, no description of what each tool is/does upon hover