# Danielle Aspitz

## MAS.863 | How to Make (Almost) Anything

### Geo-Flower Dome

#### Press-fit geodesic dome with three alternating shapes

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1. Idea
2. Hands-on experimentations and realizations
3. Design
4. Fabrication
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##### 1. Idea

This week's assignment was to cut something on the vinylcutter, to make a parametric press-fit construction kit, and to document both processes.
Quite quickly I found upon discovering what a press-fit kit is and browsing for inspiration I landed on a project that seemed doable and fun. I spent far too much time trying to wrestle with the creation of a geodesic dome in grasshopper, which is surprisingly difficult. As it turns out you need Kangaroo and Weaverbird installed in order to populate the sphere with equally-sized polygons rather than subdivisions relating to the curvature of the sphere. Even still I was frustrated to find that the polygons were approximately equal but not EXACTLY equal, which deeply annoyed me and proved the entire process fairly useless. I did in the end use the form to calculate the angles between polygons, and to roughly estimate size and quantity of the polygons I wanted lasercut. However ultimately I wound up laying out the pieces to be cut in a more manual fashion.

###### Figure 1. Wrestling between fully parametric and a more "analog" digital process

Another early Grasshopper hurdle was trying to assign within the geodesic dome which hexagons were full hexagon with 6 slots and which were notched hexagons with only three slots. I had originally thought this might be a 6 to one ratio, because every full hexagon had 6 notched ones surrounding it. It took me until giving up and resorting to analog to realize that this ratio was actually 2 to 1, notched to full as the notched ones are recycled throughout the dome while the full ones are not. Another realization that in reality it was not even 2:1 but 1:1:1 as in each formation it was one notched, one mirrored notched and one full.

##### 2. Hands-on experimentations and realizations

It was an interesting experience of going back and forth between parametric to analog. The parametric attempt informed me of the information I needed to find (the ratio of notched hexagons to full ones) and the analog clearly informed me of this detail. Once I had my hexagons laid out it was time to find the optimal notch size for the press-fit. I tested a few sizes, but ultimately do regret not doing the comb technique because while the joints fit well they are a tad bit too tight so it takes a small amount of effort to push each joint together.