1. Designing Your Clock

2. Constraints Maximum of 10”x10” (front, back)
Must have openings to view the gears
Must have at least 3 personalized elements
Must have a seconds hand
Driving gear must have 30T
Must be themed
Pendulum length must be 6.79”
Must be gravity driven
Must be pendulum regulated/controlled
Must keep time for at least 30s
Accuracy must be at least to within ± 2s

3. Use these constraints to find Gear Ratio
Must have a seconds hand
Driving gear must have 30T
Pendulum length must be 6.79”
Remember:
𝑃=2𝜋 𝐿 𝑔
𝑊 𝑜𝑢𝑡 = 𝑊 𝑖𝑛 𝐺𝑅

4. Raster vs. Vector Raster Images Vector Images
Array of pixels of various colors
Loses quality when scaled up to larger sizes
Good at displaying large numbers of colors
Large file size
Formats: JPG, BMP, GIF, TIF, etc.
Collection of lines/curves with starting and ending points that have color and thickness
Scalable without losing quality
Poor at displaying large numbers of colors
Small file size
Formats: SVG, CGM

5. 1. Choose an Image to Engrave
Characteristics of a Good Engraving:
High contrast
High resolution (300 x 300 pixels or better)
Should look good in B&W
Minimize shaded regions with no information content
Everything that has color will be engraved. Engraving takes a lot of time!!! Choose your images to minimize time as best you can…
Excellent – Very strong contrast; good resolution; already in B&W; all dark areas carry information
Good – Very strong contrast; high resolution; in B&W; large shaded region with minimal information content
Poor – Contrast is only between light & dark colors; good resolution; too much informational content
500x518 px
1080x546 px
1200x1011px

6. Order the images below from best to worst…2. 3. 1. 4. 5. 6.

7. Order the images below from best to worst…4. 6. 3. 1. 5. 2.

8. Google Image Search Tools: Color

9. Google Image Search Tools: Type

10. Designing Your Clock: The Narrative

11. Tell me a story… Your clock should be more than a work of engineering…
It should have a theme;
It should tell a story.

12. Tell me a story…

13. Tell me a story…

14. Tell me a story…

15. Tell me a story…