Concept Drawings
Now that you have an idea of what is possible with the OTTO, and you have understanding of TinkerCAD, you can start to put your ideas together to create concept drawings. You will create four different OTTO concept designs on TinkerCAD and then annotate them on your WordPress website.
Organising your work
– Go to the activity titled PLAN: CONCEPT DRAWINGS and copy the original OTTO design.
– Paste this design into a new drawing within the same concept drawings activity, then create your first or 4 concept designs.
– Make a new design for each concept. Make sure you keep all concept designs in the same PLAN: CONCEPT DRAWINGS activity.

Annotating your work
– When you have your four concept designs complete, take a screen shot of each design using the keyboard keys: command / shift 4 and then select the window that you want to photograph.
– Upload that photo into your WordPress webpage under the heading of Concept Drawings
– Add a heading to organise each concept drawing
– Change the block to a media and text block
– Add three annotations per design explaining the positive aspects of your designs or improvements to be made (these are heading suggestions)
– Note, you may need to include a few images to show different angles of your design
EXAMPLE:
Concept Drawing 1: Scuba Diver
Positive Aspects:
The snorkel section of this design can be printed in the same print as the head component with minimal supports required.
Improvements
The feet of this OTTO could be shaped into flippers to add to the scuba diver design.
Improvements
An attachment could be made to hold the scuba tank so it could be removable

Concept Development
Now that you have four different concepts and have analysed them in detail, you can start to develop your ideas towards a final solution.
Organising your work
– Go to the activity titled PLAN: CONCEPT DEVELOPMENT
– Copy and paste your chosen concept drawing design into a new drawing within the same Concept Development activity.
– Make three improvement changes to your design
– Add a screenshot of your design, with the new changes, into your WordPress webpage.
– Copy your newly developed OTTO and paste it into a new design within the same activity and repeat the development process.
– When finished, you should have three Concept Development designs, each with additional developments.

Development Annotations
Change your screenshot image to a media and text block, then annotate the image with the three changes that you have made.
Some possible development headings could include:
– Strength
– Size
– Proportions
– Shape
– Print time
– Print difficulty
– Component fit
– Colour
– Improvements
etc.
EXAMPLE:
Concept Development 2: Sir OTTO-A-Lot

Proportion
Moustache added has been reduced in size to better suit the proportion of the OTTO body
Print Difficulty / Component fit
The ribbon around the top hat was removed. It would need to be printed separately to be a different colour and would be difficult to get it the size right
Improvements
A monocle could be added over the LED panel add to the theme of the design
Final Design
Once you have finished your design, you will need to prepare your OTTO to print.
1. Upload a picture of your final product with a heading introducing your piece,
2. Arrange your components in the orientation that they will be printed,
3. Export your components into STL files ready for the 3D printer,
4. Download Flash Print,
5. Print components.
1. Final Product
Final Product: Angry OTTO

2. Components arranged for printing
Some components needed to be rotated to sit flat on the print bed or flipped to reduce the amount of supports needed

3. Export to STL

Step 1: Select the individual component to be exported
Step 2. Click on Export on the right of the screen
Step 3. Select .STL file format
Step 4. Find your file in your downloads and open with Flash Print
4. Flash Print
Click on the link here to find the downloads page for Flash Print, then download the Mac version

5. Print components
Your teacher will show you how to use the Flash Print software to finalise your print set up. Slice your components using printer specific settings then send them to the printer.
