> For the complete documentation index, see [llms.txt](https://alessandro-cavallotti.gitbook.io/digital-fabrication/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://alessandro-cavallotti.gitbook.io/digital-fabrication/week-1.md).

# Week 1

The first idea I had came from a product I saw in 2012 when I visited the laboratory of the company NCS is Carpi [https://ncs-company.com/](https://alessandro-cavallotti.gitbook.io/digital-fabrication/). They showed me a telephone loudspeaker that they had designed to amplify sound using the principle of the golden ratio. Starting from this idea I wanted to replicate it but using the constraints of the class:

* FLAT SURFACE
* MODULAR
* PARAMETRIC
* PRESS-FIT
* FOLDABLE

I looked up first at some online projects.

![](/files/rEfWXImiCkGOp4lhg6Lr)![](/files/SUOb6dq7vFKbaKWCVH0b)![](/files/C9ExAodf9v4KT6oJhHP0)

The first problem is to use flat surfaces to make something that is rounded. To achive this goal I decided to divide the design in different parts. I would start with the base of the spakear first as a flat surface.

**First Golden Ratio (Base of the Speaker)**

![First Golden Ratio](/files/LUOOvSMZmUjcX6lCAxze)

**First Extrusion of the Golden Ratio (Base of the Speaker)**

![](/files/qRKuyjXmw22vAyu2Bu5d)![](/files/LogUNi1vtKo4FSo7GvgH)

**Removing the center part to use less material and save time when printing**

![](/files/vqQwVLk4dLMN6UUAoEw6)![](/files/7By9DmZiVEXWEJzqY1Qn)

**Creating holes in the base frame for the press-fit sides**

![](/files/WIZ7frHc4gRjJoDtlNtr)![](/files/Ha6RyNShsgbYRo1UqY6p)

**Adjusting the position and size of holes around the frame**

![](/files/UvIGs5afSq6YZruGAlNg)

To make the speaker more creative and theoretically more powerful, I wanted to make the size of the speaker follow the golden ratio. So I calculated the length of the end of the speaker where the sound should come out as 3 x 1.61803398875 x the length of the segment at the entry point of the speaker and then reshape the speaker according to this proportion.

![](/files/y4RowdNqRgRhq3xetWsS)

On Thursday I was able to go to the lab and print the base.

<figure><img src="/files/H9yXOHU6FQfFHoqSL54t" alt="" width="375"><figcaption></figcaption></figure>

After seeing the result I wanted to add the first pice of the press-fit side of the project so I designed the fitting pice for the smaller hole. In designed just the frame so I would use less material and time just to see it the sized and the design would work when bended.

![](/files/RWOI2y0lRiNzhNhUrvIm)

Finally I printed the component and tried to press fit it with the speaker base.&#x20;

<figure><img src="/files/YxdIWclS0oDDmKyWreWK" alt="" width="375"><figcaption></figcaption></figure>

It passed the press-fit test, but some improvements are needed due to the size of the base of the side, which was too large and once inserted, a small part of the object comes out at the bottom, which is not optimal for stability on flat surfaces.

I never used Autocad Fusion 360, nor had I ever printed anything on a 3D printer so the first step was the learning of the tolls following the tutorials provided in class and some additional guidance by the professor Di Vozzo.&#x20;


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