Star pattern

Star pattern, parametric 3d printed structure (Fabricademy, FabTextiles, Fab Lab Barcelona, 2018)


The marriage of fashion design with the processing power of computing in recent years has allowed for the adoption of design-thinking paradigms previously limited to other fields of design. Parametric design is one such approach. It allows designers to alter aspects of their designs without necessarily needing to redesign the product from scratch. Designers can now change specific parameters such as size, color and dimensions individually, or according to an algorithm. Designer software now allows makers to alter one part of a garment to affect the rest of the garment proportionally, or indeed to whatever parameters they set.


The idea of Star Pattern project was to design a 3d printed structure with rigid filament that could be extended and deformed. I wanted to create elasticity only through the design and not the material used. This project was also my introduction to parametric design. I started the project without Grasshopper to first understand how my star shape was constructed. Then, step by step I tried to re-built my shape using Grasshopper. Coding a shape was a first for me and I didn’t succed to design everything that I wanted but it’s a good starting point.


Project : Design a PLA 3d printed structure that can be extendable.


Process :
(1) Design the firsts Rhino tests
(2) 3d Print the firsts modules
(3) Re-design the module with Grasshopper
(4) Simulate a garment with the parametric module


Material :
- Computer
- Rhinoceros software
- Grasshopper software
- Cura software
- 3d printer + PLA filament


(1) Design the firsts Rhino tests
The star shape came quickly in mind because of its interesting structure. I could join the edges together creating a rigidity and in the same time having flexibility because of the stars opening in their middles. I wanted to try to 3d print with one line and see if it was resistant enough. I offset my star of 0,6 like the thickness of the extruder of the 3d printer. I extruded the star of 3 mm. I wanted to design a star with the maximum rays I could get for creating a better flexibility.


(2) 3d Print the firsts modules
I printed the two firsts tests, the 12 and the 24 rays stars, I designed on Rhino to see if the shape was acting like I wanted and also to check if the thickness was strong enough.


(3) Re-design the module with Grasshopper
Once I new wich design create, I open my Grasshopper and played around for building my shape. Here is step by step what i did on Grasshopper. The most difficult part was to find a way to connect each one of my stars not by the pics (because too fragile to 3d print) but 3 mm inside the pics. Small details were really difficult to controle with Grasshopper especialy because I had a precise idea of what I wanted..


(4) Simulate a garment with the parametric module
Unfortunatly, I could print more than 3 connected stars because of the bed size of the printer. Print 3 by 3 would probably give a weird not homogenous aprearence. So, I decided to convert my star into a single module with holes, possible to be connected by thread. I thought a long time about the connecting system and this is the best idea I could get so far. I wanted to design a 3d printed top with this 24 stars pattern but I didn’t have the time to finish it. I still want to improve the connecting system.