For first project in 7th week, I designed a small bench, two seats, with very low seat, about 40 cm from ground. Despite this, the pieces were too many. I tried to scale it, or remove some elements, reducing some section, but I could not to find a solution. I needed minimum one wooden board and half.

Small bench idea.

Then I started a new project. I wanted to create one artistic thing to put attached on the wall. This was a new reinterpretation of Fablab logo, containing some algorithmic geometry.

Starting from original logo, I made in the centre a spiral inspired to nature, like sunflower, pineapple, etc... This spiral is very famous, because come from to Fibonacci series, in fact if you count all elements of pineapple or sunflower you will have ever one number of Fibonacci series. In addition, this spiral contain another important element, all elements are arranged following Golden Ratio, in this case is present a specific angle, 137.5°. This is the representation of the equilibrium and harmony.

Some images of ispiration.

Therefore, I created this thanks to Grasshopper. After many attempts, I could to make this algorithmic in parametric form. In addition, I created another algorithm, about simple triangles and one attractor. Their same radius, increased approaching the attractor.

Projecting algoritmic design.

Here you can see better all algorithm.

Grasshopper algorithm of FabLab icon.

After this, I created the 3D model. I wanted to create a mechanism for to rotate the central spiral and to make an optical illusion to growth of the logo. Therefore, thanks to one bearing, I drew a simple mechanism.

Graphical section of object.

In addition, I draw a simulation of assembly with Fusion 360.

Algorithmic FabLab icon rendering (front).

Algorithmic FabLab icon rendering (back).

I made the model with laser cutter, for to check that this was ok.
I couldn’t made one model dynamic, but only static. I chose cardboard for this.

Sending file to Laser cutter.

Laser cutter at working.

Fablab icon prototype (front).

Fablab icon prototype (front).

I created all 2D file, and organized them for the exportation with layer in Shopbot software, for each tool option.

Organizzation for the working machine layers (zoom in).

Organizzation for the working machine layers (zoom out).

Finally, I superimposed all layers and positioned al pieces on the panel, the size I had available.

Overlapping of layers and layout for milling.

For each layer, I created one track for working machine and one tool. At finally, I create one simulation of work, for to see that all it was ok.

Milling preview.

Milling preview (zoom in).

But when I create the file for the Shopbot, with all machine track and all different tools, I saw one big problem…the time!!! The software calculated over 7 hour of working machine. All of this only one day before the Wednesday review. Furthermore Fiore Basile, my instructor, sad me that this project it was not correct for this assignment, because it was not big. I could enlarge it, but it would have taken a lot more machining time!

Anyway, I chose the way for to transform this project in something to big and useful. The first idea it was to design one coffe table, maintaining the movement of this. I thought one way for to simplify the project, and consequently the working machine.

So I close the triangular holes deleted the structure above the Fablab symbol. I re-thought one simple way for to create one stable structure, using only three support points.

FabLab coffe table 3D model (top).

FabLab coffe table 3D model (bottom).

Then I re-made one quickly prototype, with laser machine. But this time I tried also the mechanism with the ball bearing.

FabLab coffe table prototype (bottom).

FabLab coffe table prototype (top).

Bearing test.

Video bearing test.

I recreated the Shopbot file, I made another simulation and checked the time of working machine. This time it was ok, about one hour and half.

Finally I could go at Shopbot machine and prepared all, for the working.

At first I made the spindle warm up routine and set Z axis of the machine.

The spindle warm up routine .

Z-axis set (step 1).

Z-axis set (step 2).

Z-axis set (step 3).

I created one more layer for to create four hole, which I used to put the fixing screws of the panel. I used one OSB panel, for this assignment.

Exporting new layer for the holes.

I set the xy home and lunch the first work layer, four simple hole.

Set XY home.

Manual moviment.

I put four mounting screws of my panel and lunch the working layer of ¼” tool, before the engraving and after the cut file.

Mounting screws of my panel.

Machine at work.

After this work, I had to change the machine tool, because in the algorithmic design there were some small point that the ¼” tool was too much big. Anyway, I used 1/8” only for the small point.

Therefore, I changed the tool and reset the Z axis another time.

Change of the tool

Set Z-axis.

At finally, I removed and sandpapered all pieces and mounted.

Removed and sandpapered all pieces.

Mounting the structure.

Insertion of the bearing.

Insertion of the bearing (zoom in).

FabLab coffe table monted.

I didn’t fix all joints, because I transported it from Siena to Cascina Fablab, and I wanted to use one protective product which highlights the algorithmic inside the table.