Digital Design - Module 02 Semester 1, 2018 Zicheng Peng

(900736) Michael Mack + Studio 5

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)

Subtractive fabrication, additive fabrication and formative fabrication. Subtractive fabrication is using electro-, chemically, or mechanically-reductive process to remove specific volume of material from solids. Addictive fabrication is adding the material layer to layer. While for formative fabrication, it uses mechanical forces, restricting forms, heat or stream to help the material to form into any complex shape. All these three techniques are Computer Numeric Controlled fabrication (CNC). Using CNC allows to design more desired shape with continuous and highly curvilinear shape, while the architects can directly get involved in the fabrication process, helping to make these parametric models more constructible and producible in real life. Moreover, it can be used to test the model within the built condition or surrounding environment. Therefore, with this advanced fabrication techniques, there will be a very large extend to create parametric model with many different variations, and much easier to be built in real life.

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Week Three

Surface Creation-Surfce Script

find the four points of the surface by adjusting the number sliders, then using a line constractor to join two points together,

Loft two lines together to form a surface

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Week Three

Surface Creation

When making the surface, I try to make something that has a broader distance at the base and a bit narrow at the top (Top Left Corner of the Surface Iterations). Then I want to do the opposite, so by making the coordinates of the based points close to each other in Y-Direction and the coordinates of the top points far away from each other in Y direction (Top Right Corner of the Surface Iterations). Then I want to see what if the surfaces are very curved by making the points at diagonal direction are very far away from each other (Bottom Left Corner of the Surface Iterations). Lastly, considering the fabrication, by combining top left corner and the bottom left corner, I decide to have something that has a broader base at the bottom while the surfaces are not very curved for my final surface script. Therefore, one of my surface script is a bit flat and the others is little bit curved. And in order to make the whole structure can be stand on the table, the base points are all at the same horizontal level.

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Week Four Panels & Waffle

Top View of the Waffle Structrue

For my two panels surface, the one that is bit curved is just using solid panels, while the others that has flat surface, I explored the weaverbird component to increase its complexity of the final effect.

The waffle structure is mainly based on the two surfaces, but one thing that is very interesting is, due to the curved surface, the panels are all turning into different angles (as shown in the top view).

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Week Four

Laser Cutting

When preparing the laser cut file, it is very important to distinguish the what are needed to be putted in cut layer and etch layer. Laser cut only cut lines instead of surface, so we need to explode all the text and left only the linework for our objects. There are also other tips I learnt from this module. For example, we can aline the waffle structure panel next to each other and delete the duplicate edges, so that the laser cut will only do one cut on that edge to save our money. Moreover, to reduce the use of masking tape, we can put some cut lines to etch lines, so that the panels will not fall done and no need the tape to fix them.

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Week Five

3D Boolean Objects Script

Using attractor points to manimulate the panelling grids

Playing around differentregular goemetries in lunchbox and weaverbird

Scalling the geometries

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Week Five

When doing the boolean form, I just randomly did some attempts first, to see any interesting part I could pick up and develop it further. Then I found the boolean difference between the tetrahedrons and surface envelop would create a stripped form at 45 degrees (Top Left Corner of Boolean Iterations). This reminds me the strips on the buildingâ€™s facade will always create fantastic shadow effect. Then in order to keep this language and find the meaning for other components within the boolean object, I changed different attractor points or cut the boolean objects in different ways (Top Right Corner and Bottome Left Corner of the Iterations). Since most of the strips are protruded to the side, I want to see what if they are pointing toward the top, then by carefully choosing the cutting way, I made it and I found there will be some triangular hollows at the back of the boolean object due to the intersecting geometry (Right Bottom Corner), this again is another interesting language for opening that I can apply in the pavilion.

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Week Five

Isometric

The triangular shapes refer to the pyramid panels in task 1

The intersecting tetrahedrons exceed the surface envelope, creating this striped form and forming striped shadow when light passing through

Applying hollow parts formed by intersecting triangular shapes on the facade. If paving some coloured glazing glass on the opening, it creates colourful and dreamy lighting to the interior.

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Week Six Task 01

Lofts

1.1

1.2

1.3

Key

1.4

{0,0,0}

{50,150,150} {150,0,150} {0,50,150}

{0,50,150}

{0,100,150}

{0,150,125}

{0,50,150}

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

{100,150,150}

{150,150,0} {150,150,25} {50,0,0}

{150,50,0} {0,50,0}

Paneling Grid & Attractor Point

2.1

2.2 {-45,1,161}

{150,100,0}

{150,150,0}

2.3

2.4

{-45,1,161}

{143,-33,150} {143,-33,150}

{77,-10,74}

{77,-10,74} {6,-33,1} {6,-33,1}

{188,-72,5}

{188,-72,5}

Paneling

{Attractor Point Location}

{Attractor Point Location}

{Attractor Point Location}

{Attractor Point Location}

3.1

3.2

3.3

3.4

Key

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{0,0,0} {0,150,125}

{0,50,150}

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

{150,150,25} {150,100,0}

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{77,-10,74}

ractor Point Location}

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{150,50,0}

Task 01 Matrix For the first line of my Task 1 Matrix, I made some surface iterations that are different from distance or the degree of curve, then in order to make the structure can stand up without falling and easier to build, I use the Matrix 1.4 which the surfaces are not very curved and has a broader base to do my second line matrix. For the second line of the matrix, I mainly focus on what are the effect of point attractors at different locations. I tried to use attractor points at the two diagonal directions and the center of my panel surface. Then I decided to combine all of them and by moving their positions to control the protruded directions of my panels. Then for my third row of the matrix, I used different forms of pyramid as my geometry, such as a simple single pyramid, double pyramids, solid pyramid and hollow pyramid by using weaverbird. At the end, I decide to use the double pyramid and use solid panel and hollow panel at different sides. This is because, in each panel, the double pyramids are pointing towards different directions, if I place the attractor points at each corner and the center of the surface, the two protruded parts will react differently to the attractor points. Moreover, weaverbird allows to create hollow panel and this is a new skill I learn in this module, so I want to apply it on the panel, and the hollow panels can increase the complexity on my flat surface. If refer to the pavilion, the hollow part can bring different lighting effect to the interior while the solid panels create different shading effect on the buildingâ€™s facade.

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Grid Manipulation

1.2

1.3

Key

1.4 {150,0,150}

{0,0,0}

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

{71,73,55} {-11,-39,74}

{0,150,0}

Geomeyty Distribution

{Point Attractor}

{Point Attractor}

{Curve Attractor}

{Random Attractor}

2.1

2.2

2.3

2.4

{71,73,55}

{71,73,55}

{71,73,55} {-11,-39,74}

Boolean Difference

on}

1.1

{Consistent Scaling}

{Scaling}

{Scaling}

{Scaling}

3.1

3.2

3.3

3.4

Key {0,0,0} {0,150,125}

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

{150,150,25} {150,100,0}

{77,-10,74}

Task 02 Matrix For the first line of the matrix, I try different attritors, such as point attractor, curve attractor and random attractor. then I choose the Matrix 1.1 and 1.2, which are all point attractor but at different locations to do my second-row matrix. This is because using attractor points I can control the geometries to scale from different direction. Move to my second row of the matrix, I first try the consistent scaling. Then, if I refer the attractor point, which is located at the center of the surface envelope, into grasshopper, the geometries are scaling from smaller at the center and getting bigger when moving outwards. With the same attractor point, I use one geometry in lunchbox and one geometry in weaverbird to play with the different effects. Then if I refer the attractor point which is located at the corner of the surface envelope, geometries that are close to the attractor point are the smelliest, the tetrahedrons appear as radial form. Then I quite interested in what will the exceed and intersected tetrahedrons will form different boolean object with the surface envelope, I used matrix 2.3 and 2.4 to do the boolean itera-tions. After I did several attempts, I found that the shape tetrahedrons can form some 45-degree-strip. This can be used to analysis the relationship between shadow, light and solid objects. Therefore, I boolean the matrix 2.3 and 2.4, cutting them in different directions to develop this striped form more, and this becomes my third-row matrix. Lastly, I choose 3.4 as my final 3D Print because it contains the characteristics of strip while there are some interesting hollow parts at its back. The hollow parts are similar to my hollow panel and what if I place some coloured glazing glass on the opening, it will become another type of light effect.

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Week Six

Final Isometric Views

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Appendix

Process

Task 1 Other Itteratios

This is my first attempt without any consideration for this module. The panel I used is a geometry with four pyramids and the top parts of these four pyramids been cut out. After doing Morph 3D in grasshopper, I used weaverbird and adjust the magnitude to 15. This creates a very thin frame and when looking the whole panel surface from the top, the panels look like the flower pattern. However, when I unrolled the surface, it turns out something very complicated so I did not use this panel for other iteration, but I still quite like its effect.

These are the panels geometries I have made in this module. All these panels are developed from a simple pyramid form

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Appendix Process

Model Making

Label the number on the waffle structure can help me easier to know which number is refer to which piece in the waffle structure. The same as the panel surface, by changing the display colour and reference the display colour on the number, I can clearly know which number represents the actual panel in the model. Clear label helps me easier to fabricate.

Before submitting the rhino file to laser cut, I printed out some of the panel on normal A3 paper. Although using this way to test the panel is quick and cheap, but it is not an ideal way to test the constructability of the panel on ivory card with normal paper because they are different in material characteristics, one is soft to fold, the other is hard to fold. On the other hand, it was lucky to find that the distance for the tabs could not be 1mm, otherwise, it will be disaster when joining two separate panels together

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Appendix

Process

When I first laser cut my waffle structure, the mountboard was run out in fablab, so the staff used boxboard to laser cut my waffle. If comparing the modelling process between boxboard and mountboard, I think it was much easier to construct the waffle structure with boxboard. I think it is because boxboard is rougher on the surface than mountboard, therefore more force of friction on the boxboardâ€™s surface helps the pieces fix in place easier. But it is true that using mountboard is much appealing to see with the white panel surfaces.

Waffle Structure that is Built with Boxboard

Waffle Structure that is Built with Mountboard

There are lots of burnt mark on the mountboard, so I used eraser to clean as much as I could, making the surface looks cleaner

Since the hollow parts do not have tabs surround them, the lines of the hollow parts need to be in the etch layer, otherwise, there will be burnt marks on their edges. For those edges with tabs surround them will be fine, because the burnt marks mostly show on the tabs and the tabs are not seen from the front view of the panel surface

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Appendix Process

Task 2

First atempt with the icosahcdron geometry

Boolean difference itterations with same geometry but different point attractors, and cutting in different ways

Physical model Panels at this diagonal direction are trying to protrude towards the center and the two pyramids on each individual panel are pointing close to each other The centre concentrated together Panels at this diagonal direction are trying to protrude towards the outside and the two pyramids on each individual panel are pointing away from each other. placing the attractor points at the four corners and the center of the panel surface,

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Photos of the Waffle Structure

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