Digital Design - Module 02 Semester 1, 2018 Rachael Li

912103 Chelle Yang Studio 01

Week Three

Reading: Kolerevic B. 2003. Architecture in the Digital Age

Kolerevic described three fundamental type of fabrication techniques in the reading. Outline the three techniques and discuss the potential of Computer Numeric Controlled fabrication with parametric modelling. (150 words max)

The three fundamentals types of fabrication are subtractive, additive and formative. Subtractive involves removal of specific volume of material from solids using electo-, chemically-, or mechanically- reductive (multi -axis milling) processes that can be axially, surface or volume constrained. Additive involves incremental forming by adding material in a layer by layer fashion, this is the converse of milling. In formative fabrication, mechanical forces, restricting forms, heat of steam are applied to a material to form it into the desired shape through reshaping or deformation which can be axially or surface constrained. Computer Numeric Controlled fabrication allows for greater potential for the development of parametric modelling such that data from the computer can be directly transferred and computerised into machineâ€™s computer to generate the final model. Moreover, a faster and flexible design and production process is possible with CNC as the digital parametric model can be manipulated simply by editing the script which allows for greater variety of prototyping before reaching a final model.

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Week Three

Surface Creation

I have used the list item command to select the edges and their points that I want to modify in order to obtain the different curvalinear surfaces. I have experimented with waffles that are curved to a large degree but realised they could be difficult to produce waffle structures since each vertical could also be deformed to fit the surface.

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Week Four Panels & Waffle

The panel of the left has more perforations with sizes being the smallest at the top left corner and largest in the middle part before gradually reduce in sizes towards the bottom right corner.

My waffle design focused on stability hence one side is relatively flat while the other side is curved to envelope and gravitates towards the flatter part to distribute forces to the straightened side.

The panel of the right has relativesly fewer openings as I wanted to focus on the different patterns that could be created when different groups of geometries are juxtaposed next to each other.

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Week Four

Laser Cutting

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To prepare for laser cut, I needed to create etchings where I could fold easily however it was only possible for one-way folding. A better way that will allow two-way folding is to put dashed lines as folding line which will be laser cutted instead of etched.

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Week Five

Apart from trialing with the default geometries from Lunchbox (Fig.4 Platonic Icosahedron) I also explored with creating my own geometries as cutter object.

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Week Five

Isometric

My final booleaned object was trimmed with a customised brep which I referenced back to the grasshopper script. At first, after boolean difference, many part of the trimmed edges were not actually visible in the original cube form, it was only after I further trimmed the cube with another geometry with various orientation that I could obtain the negative surfaces of my cutter object. I have chosen this brep to be used as my cutter object as the brep itself is consisted of various surfaces and edges which could be used to enhance the overall angularity and variation of the trimmed solid. I have used the â€˜Voronoi 3Dâ€™ command on grasshopper to obtain this brep at the start.

Due to the nature of the cutter geometry and that fact that trimmed the cube with a cube at different orientation, I have created a solid that is porous to a large extent such that the interior geometric composition is visible from the outside seen through the flower-like openings. The variation in protrusion of the surfaces meant a smoother connection between interior volume and exterior void. The interplay of parts that are not trimmed by the boolean object create interesting pattern through the hollow receding surfaces bordered by flower-like/ radial form untrimmed surface. The receded surfaces can create a platform to look outside from the interior establishing a threshold. The interchanging position of solid and void allow abundant light to penetrate through the model.

Cutter geometry

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Week Six Task 01

Lofts

1.1

1.2

1.3

Key

1.4

{0,0,0} {14,243,150}

{0,-1290,150} {0,-142,150}

{0,-1119,150}

Attractor / Control Curves

{-164,123,150}

{15-,-142,120} {-278,27,-7}

Attractor / Control Points (X,Y,Z) Grid Points

{-502,150,150}

{-354,150,0}

{14,213,0}

{0,-202,0}

{0,-1149,0}

{-502,150,0}

Paneling Grid & Attractor Point

Index Selection

Index Selection

2.1

2.2

{14,242,0}

{-502,30,0}

{150,-142,0}

{150,-1119,150}

Index Selection

Index Selection

2.3

2.4

{150,0,150} {-513,-1200,167} {925,-516,138}

{90,-2,88} {-278,27,-7}

{55,34,94} {27,26,13}

{-285,-1,0}

{646,978,3} {1045,-545,-131}

Paneling

Attractor Point Location

Attractor Point Location

Attractor Point Location

Attractor Point Location

3.1

3.2

3.3

3.4

Geometry attractor

+ +

+

+ + + +

Task 01 Matrix While trialling with different iterations, I wanted to focus on creating surfaces that demonstrate a range of geometric formations, how one group of geometries can form certain pattern while the forming a different pattern when juxtaposed next to another group. This was what I intended to show with the panel that has fewer openings. I also wanted to show the changes in the opening sizes that will increase the permeability to the interior.

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Week Six Task 02

Grid ManipulationG

1.1

1.21

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Key

1.4

{0,0,0}

{176,152,195}

Attractor / Control Points (X,Y,Z) Attractor / Control Curves

{60,103,206}

Grid Points {87,81,123}

{70,58,74}

{206,77,0} {139,24,0}

{5,253,127}

{ 157,103,-20}

Attractor Point Location

Attractor Point Location

eometry DistributionG

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Attractor Point Location

.2

Attractor Point Location

2.32

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{108,154,0}

109,82,0}

{31,74,0}

{41,53,0}

17,21,0}

{170,104,0} {2,82,0} {60,104,0}

Attractor Curve Location

eometry Transformation

3.13

Attractor Curve

Attractor Curve Location

.2

Morph

Attractor Curve Location

3.33

Point Attractor

Attractor Curve Location

.4

Point Attractor

Task 02 Matrix While trialling with different iterations, I intended to create a form that has many dimensions to it when viewed at different angles and also with variation in the trimmed surfaces. Therefore using point attractor I needed to arrange the distribution of shapes with some receding backwards and some coming forward.

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Week Six

Final Isometric Views

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Appendix

Process

To start with, I used a triangle panels from Lunchbox and used that as the basis for panelling.

A geometry was used as attractor instead of a point. This is then used to determine the variation in sizes of the triangular openings on the panel depending on where I place it. The part where the geometry attractor is closest to has the largest opening, and hence furthest ones will have smallest openings or closed surface.

This is part of my process trialling with Weaverbird frame to obtain the consistency in variation across my panels as the sizes of openings gradually decreases towards on point of the surface.

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Appendix Process

This is the grasshopper script for creating the cutter object using command

The part outlined with red is the script for referencing my own customised

Voronoi 3D. To create the geometry that radiates out from the centroid, I

brep into the boolean script.

referenced the sphere instead of box.

This shows my process of assembling the waffle structure with the materials that I used, which includes tweezer to strengthen adhesiveness of the tabs when gluing them together.

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Appendix

Process

The result of trials using Voronoi command showed interesting

In order to obtain the irregular edges of the final model, I attempted to trim the solid with cubes of different sizes and orientations.

possibilities of creating negative and positive spaces when doing boolean command.

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