frank's blog

A Cardboard Column With 16 Million Facets – Michael Hansmeyer in Berlin

Posted in architecture, art by aldorf on May 4, 2011

(Photos Michael Hansmeyer + thisiscolossal.com)

One of Michael Hansmeyer’s cardboard column is in an exhibit right next door to my house at Smallspace Gallery, Berlin. He is a computational architect who examines the use of algorithms and computation to generate architectural forms. This project, Subdivided Columns – A New Order is a 9-foot column that weighs nearly 2,000 pounds generated by iterating a subdivision algorithm and then utilizing a laser to delicately slice each segment of cardboard. Michael Hansmeyer uses algorithms invented by Pixar.

A full-scale, 2.7-meter high variant of the columns is fabricated as a layered model using 1mm sheet. Each sheet is individually cut using a mill or laser. Sheets are stacked and held together by poles that run through a common core.

The calculation of the cutting path for each sheet takes place in several steps. First, the six million faces of the 3D model are intersected with a plane representing the sheet. This step generates a series of individual line segments that are tested for self-intersection and subsequently combined to form polygons. Next, a polygon-in-polygon test deletes interior polygons. A series of filters then ensures that convex polygons with peninsulas maintain a mininimum isthmus width. In a final step, an interior offset is calculated with the aim of hollowing out the slice to reduce weight.

See more images at artist website 

Read an article on FastCo 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: