Digital Fabrication » 3D Printing

Lego Brick weaving pattern / Vukovic Marko and Ali Gharakhani

iaac — Thu, 16 Dec 2010 20:06:40 +0000

CNC Fabrication | BCN_Milled Foam Model

iaac — Sun, 12 Dec 2010 21:00:47 +0000

Barrio : Poble Nou
Team Members : Morten Bülow, Manuel Huerta, Ayber Gülfer

digital fabrication

iaac — Fri, 10 Dec 2010 13:39:54 +0000

Assignment #2 – The Brick – 3d Printer

iaac — Mon, 06 Dec 2010 13:22:22 +0000

The Table Bench

iaac — Tue, 09 Nov 2010 09:21:40 +0000

Group:
Carolina
Renata

To think about a bench is to think about several people. And several uses. Some people read, others sleep, some sit and some eat. Sometimes it’s just good to be able to do it all. For the IaaCommunity Bench, we decided to keep it simple and keep it working. A table bench. As the section of the bench was predefined to enable the different proposals to connect, we started by defining that the top of the bench would be flat and the bottom would look like… a bench! The editing process begun by creating a cage with the command CageEdit>Select the Bench>BoundingBox> x=15, y=10, z=4. With the Control Points on, we repositioned the points so we could have the form imagined by us. After the form was defined, we needed to close the interior surface using the command Curve> Curve From Objects> Duplicate Edges. Then to create a surface and finally close the bench, we used the command Loft.

The next step was to use command Contour to create sections of the object in X and Y axis. For that, we created new layers, one for each axe. After creating the “ribs”, we created a new layer called “Intersections”, and used the command “Intersections” to create lines in the intersections between the ribs in X and Y axis. Those lines were used as guidelines to create pipes at the intersections between the ribs.

Using a Grasshopper script we chose ribs on the x-axis, the y-axis and the intersections lines in order to be faster instead of copying and moving each pipe one-by-one manually. After the intersections had been made, we baked the axis individually and grouped each rib by using the TOP view and selecting each line separately.

After we made a new layer called DOT, we used the Dot command to name each rib and group it with it’s piece so we would be able to move them around without getting the order of construction lost. We then rotated the ribs so they could be in the same direction. We trimmed each section in order to get the connection edges. Finally we used another script to engrave the numbers and our name in the pieces under a new layer.

To finish the process we deleted the previous layer DOT and drew a rectangle with the dimensions of the wooden board (1200×2500) under a layer Wood. We manually placed each rib on this plane in order to make the most efficient placement and the less use of materials. Finally we created a layer Cut and renamed all the ribs on that layer. The file was then ready to be exported as a .dxf format.

Cobogó: A Trip from Brazilian Modernist Architecture to 3D Printing

iaac — Tue, 09 Nov 2010 09:20:23 +0000

Group:
Carolina
Renata

Marcio Kogan's contemporary approach.

Cobogó is the name of the hollow elements, originally made of concrete or ceramic, created in the 20th Century. Its name derives from the initials of the surnames of three engineers that worked in Recife, Brazil: Amadeu Oliveira Coimbra, Ernest August Boeckmann and Antônio de Góes. These elements follow the same principle of the old wooden elements of Moorish architecture: solution to the closure of structures. While looking for references to fabricate a 3D printed brick, it was natural to end up looking for elements that were already used in architecture. The hollow sections found in cobogós were perfect to spare material without compromising the stability of the structure. Re fabricate old elements paying an homage to our own backgrounds while having the chance to give it a twist. A trip in space and time.

To create the brick, we chose 5 different decoration patterns of cobogós. We constructed five solids with dimensions 21.67×21.67x2mm. For all of them we did an offset of 2mm to keep the boundaries required for the material not to break. Then we drew polylines to create the designs or rectangles. After a polyline was done, we did Extrude Closed Planar Curve with the same thickness of the original solid. With that we could erase the internal curves to avoid having unneeded geometry on the surface. Then we did Boolean Difference between the bigger solid and the ones created with the Extrusion of the Curves to make them hollow as a cobogó.

Traditional ceramic cobogós used in Brazil's Modern Architecture

Finally we categorized each cobogó as different layers and copied and alternated them to construct the mosaic pattern. After the first wall containing 6 bricks on the x-axis and 3 on the z-axis, we used Boolean Union to create a single solid. Then we deselected all Snaps, leaving only End and then starting constructing the remaining surfaces. Copy the first wall and then rotate it on the same edge. At the end with the 4 walls created, we joined them by using Boolean Union. The same process was done to create the top surface. Once it was positioned, we did a cylinder at the center of the connections with a radius of 19.5mm and thickness of 2mm. By doing a Boolean Split between the cylinder and the top surface, we were able to split them and delete the internal parts that weren’t necessary.

After that we extruded the cylinder to its entire height required, mirrored it for the other side of the brick and Boolean Union these elements to create the top surface. Afterwards we copied by the end point to create the base and finish all sides of the brick. The caps of the cylinders of the top, as well as the cylinder of the bottom, were left open in order to use less material and try to make the brick cheaper. Finally to close the brick we used Boolean Union for all the elements to join.

After the brick was a solid, we verified the edges using the Edges tool to make sure there were no naked edges.

After that, we made a Box with the dimensions of the Cage, and choose Analyze> Mass Properties> Volume Centroid to be able to find the midpoint of the area. Choose CageEdit>Select the Bench>BoundingBox> x=4, y=10, z=4 and grabbed the 4 centered points of the brick to Scale them with the Origin point based on the Volume Centroid drawn before towards the Center of the volume.

With that, what was a straight wall became a curved structure, that could only be constructed with new technologies, such as 3D printing. The old and the new – as always – walking together.

Cobogó: From Brazilian Modern Architecture to 3D Printing

iaac — Tue, 09 Nov 2010 02:11:17 +0000

Marcio Kogan's contemporary approach.

Traditional ceramic cobogós used in Brazil's Modern Architecture

After the brick was a solid, we verified the edges using the Edges tool to make sure there were no naked edges.

With that, what was a straight wall became a curved structure, that could only be constructed with new technologies, such as 3D printing. The old and the new – as always – walking together.

A cover for a Lego

mAni khosrovani — Tue, 09 Nov 2010 01:30:53 +0000

3d leGo brIck/miGuel guerrero-natassa Pistofidou

iaac — Mon, 08 Nov 2010 23:48:01 +0000

Brick_3d_Printing_Process

iaac — Mon, 08 Nov 2010 23:02:25 +0000

Duygu Kirisoglu // Jesús Zabala

The goal was to create alego brick skin, that also works as a structure,

keeping the 8 corners of the prisma and the cylinders for the 3d printing machine.

First we look for some references like c-wall and honeycomb.

We use Rhino to modeling and start making a map using six sides polygons

and then project to surface, but some parts were too fragile for the print, so we make

another one this time using five sides polygons and giving more thickness, we use some

tools like object snap, offset tool, trim and join, then extrude make a mesh, analize naked edges,

and finally export like stl. and wait that the print is done to clean the piece…