There has been some changes in the timezone project ideas since the last user testing that Huiyi and I conducted. Now the structure will be consisted of two layers: the cylinder-shaped timezone map and transparent sphere surrounding the cylinder. The reason Huiyi and I made this decision is because as users encounter a globe, they instantly wanted to spin it. The timezone map itself has delicate outline that won't allow people to touch and move it. Therefore, we've decided to build the second layer that is tangible, and will also give a feeling of the celestial sphere.

The part I wanted to try making this week was the second layer. Due to its character of containing the main content, it has to be transparent. However, regarding its size and its complex shape, I've rather decided to test the scale and structure with mat board than using acrylic.

These are references that I found in internet, which I still haven't memorize their names. Basically Hectohexecontadihedron is made out of 18 sections and Hebdomicontadissaedron is made out of 12 sections from the top view. Although Hectohexecontadihedron is more commonly use for building globe shape, I decided to use Hebdomicontadissaedron because the inner cylinder will be made out of 24 sections, which is the double of 12, and I like having relationship among numbers.

I first attempted to use Adobe Illustrator, but it was hard to build or even imagine 3D shape like this in 2D space. Another attempt was directly importing the reference I found into Illustrator and Rhino (which is visible in first and second screenshots). After many unsuccessful trials, I just decided to build my own Hebdomicontadissaedron. It was quite challenging for me because I don't have much experience with Rhino. Then, I flatten the structure I made and import it back to Illustrator.

First I followed the recommended setting for using mat board, which is 50 speed/50 power/500 freq. After checking my board getting barely cut out, I tried different settings such as lowering speed and raising power. As I lower the speed, I start catching some "birthday-candle size fires" - so I immediately canceled the work and instead start adjusting power. I ended up with 50 speed/90 power/500 freq setting and making the shapes to be cut twice by doubling the lines. For horizontal line, I didn't double them because I wanted to fold them and not cut them completely.

...and Ben was right about the laser cutter. As I arrived to use it, it was already out of order. Fortunately, it was on its way of being repaired, but I spent 2/3 of my timeslot just watching it to be fixed.

As the last step, I assembled them with clear tape.

Having some unnecessary fun with the previously built flashlight that has nothing to do with my timezone project.



  1. If this structure has to be transparent, what material will be the best choice?
  2. What thickness will be ideal to have right amount of firmness - so people can handle it?
  3. If using acrylic, is acrylic glue the best way to assemble this structure? Or should I keep this kind of skeletal base that supports the assembling parts?