DNA PRINTS by Camilla Rozario

L A YER S

ROBOTIC FABRICATION

Tutored by Tran Tuan Anh Dang

L A YER S

CAMILLA ROZARIO_

LAYERS brazilian exchange student

camillarozario@gmail.com

LAYERS

GENOS _8 TWISTED _9 PORIFERA _10 PLAINLESS

FEMME

_12 CONVERG

_18 FEMME _28 KUKA _32 101

CONTENTS

g e n o sss common descent

t w ist e d FEATURES thickness: 1.5mm dna: AACG material: white ABS color: : white

The first shape design was based on an octagon with curved shaped sides on the top and bottom of it. Some twist was added to one of the sides to make it a more dynamic shape.

11333 _ Robotic Fabrication Tutor: Tran Tuan Anh Dang

The design of the shape was based on living things, resembling the phylum Porifera. The knots were used as a way to represent their pores and to mimetize their irregular surface.

POR IFE R A

FEATURES thickness: 1.5mm dna: AAG material: recycled ABS color: : white, pink, coral

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pla i n ess

The shape design for this pot was the same as the previus one. However, the pores are gone and now it remains with its plain surface. It is an unfinished print because it

FEATURES thickness: 1.2mm dna: none material: recycled ABS color: : white, pink, coral

c o n v erg FEATURES thickness: 1.5mm dna: none material: recycled ABS color: : white, pink, coral, yellow

This design was inspired in a traditional ceramic shape, simple and clean. It has an interesting dialog between the square shape at the top and the oval shape in the bottom. The knots give the shape a new contemporary look.

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f e m m e woman

f e m m e

The asthetic appearance was based on the feminine side of the human specie and how it relates to nature. The curves and fluidity resembles the lotus flower, that symbolizes spiritual enlightenment and rebirth. The lotus has the ability to dip into the grime and revive itself unscathed. The sharp edges that compose the design represent the strengh behind such a delicate plant and tries to break trough the paradigm for the correlation between the word femine and weakness.

_surface

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_net on surface

_twin curves

Rhino and its plugin Grasshopper were used to alow the generation of the complex shape allowing, at the same time, quick modifications for design purposes. Also the plugin pufferfish was used to generate the organic net on top of the surface and helped simplifying the code.

_loft

_strech

_slice

_loft The curves from the net and the resulting curves from the twin curves stef were lofted in a way to not gerate extreme steep angles. For that the lofting settings had to simplify the mesh. _strech After baking the result geometry into rhino, the resulting shape was remodeled with the gumball options.

_slice With the final shaped a new grasshopper definition was used to generate the line work (with proper line spacing).

_twin curves the centerlines of the net were found with the Twin Curve command (also from puffefish) and then offseted inward with the scale component.

_net on surface With the plugin Pufferfish the organic net was generated. With sliders it was able to control de appeareace of the surface.

_surface A simple bowl was generated as a surface in Rhino interface and then linked into grasshopper with the surface component.

11333 _ Robotic Fabrication Tutor: Tran Tuan Anh Dang

K U K

This concept for printing this project was the same as the first one, however this time we used KUKA’s robot. This robot. The material used was ABS as well and, this time, it was possible to combine multiple and different colors to generate the final design. Using the KUKA|prc, it was possible to develop a simpler visual programming system Grasshopper, which is a part of the CAD software Rhinoceros 3D, that directly integrate with the KUKA robot. This feedback allows you to quickly move from the programming environment to the robot, or from design to fabrication.

FEATURES layers thickness: 2.5mm material: ABS color: mostly white. For the coloring some pinches of black, pink, orange and green were added to the white mixture height: 60cm printing time: 6 hours printing ratio velocity/extruder: Due to the steepness of the edges of the shape 35/6 - too slow the velocity and extruder 46/6 - material wouldnt stick ratio had to be tested 35/6 - too slow many times to get a good 46/7 - apropriate 52/9 - apropriate 63/11 - apropriate however lot of material spent

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i o i Along the process to produce the pot some problems were indetified: - while producing the line work for printing when we had a common edge betweent two different faces we can face a problem with the robot program as it will overlap two layers of unwanted material. To solve this problem it was necessary to redo the shape with new lofting commands to avoid overlapping/repeated line - Corners: Also related to the steepness of the edges the material accumulated in the corners of the printed pot making it ecome unintable and uneven during the printing process. This created a beatiful effect in the end but it could be a problem - Velocity/extruder ratio: Because of the complexity of the shape, the print process had to be slower than usual. However, due to time managment, we had to accelarate the process. The solution to avoid some fails in the middle of the print was to make the extruder value higher first, so the robot would melt morematerial, and only then increase the speed of the robot. With this strategy we were able to increase almost 30% of the initial velocity.

11333 _ Robotic Fabrication Tutor: Tran Tuan Anh Dang