3d printing Archives ⋆ X-Reality: University of Michigan XR

June 29, 2016October 8, 2020

Duderstadt Center Joins Local Artist to Re-Create the Gateway Bridge for Michigan Engineering

In June the Duderstadt Center was contacted by Michigan Engineering to assist with a special gift for an alumni donor. Their donor had been the designer of several bridges in the area, including the famous Michigan Gateway Bridge. The Gateway Bridge carries I-94 over eight lanes of US 24, Telegraph Road and is well recognized by commuters for it’s vibrant blue arches.

The Duderstadt Center was provided reference images and the original plans and specifications of the Gateway bridge. From this a 3D model was built and segmented to be printed on two different 3D printers: Our Dimension Elites were used to print the base, allowing for a sturdy, cost effective platform to hold the delicate arches in place. The arches, which required a much higher fidelity, were then printed in pieces using our new Projet 3D printer. The Projet is able to print at a much finer resolution and utilizes a wax support structure that can be melted away, making it the perfect printer for generating the tiny features that would be required for threading the suspension cables of the bridge.

These parts were then passed off to a very talented local diorama artist, Eric Hasiak, for further detailing, where the model was assembled, mounted, painted, had foliage placed and the delicate suspension cables strung.

August 2, 2015September 30, 2020

Xplore Engineering

Xplore Engineering is a summer camp program designed for Engineering alumni and their children in 4th – 7th grade. Through a series of experiential workshops, participants get hands-on experience in a variety of engineering disciplines. This marked the second year the Duderstadt Center was invited to participate in the Xplore Engineering workshops, this time offering students the chance to design and then 3D print custom fashion rings. Kids were introduced to activities provided by Cubify.com that allow for the creation of simple 3D printed objects like dog tags, bracelets, or rings. Each child had an opportunity to work with their guardian to design a custom ring in the style of their choice in a workshop led by Stephanie O’Malley. Some created designs incorporating their initials, others went with unique designs or simple shapes. Once each child had completed their design, they were given an introduction to how 3D Printers work by Shawn O’Grady. Their files were assembled for printing in the Cubify software, and then each child had a chance to send their print to the Cube 3 3D Printers for printing, a unique opportunity for them to get involved in operating the technology. As they watched their creations be printed, the group was introduced to unique applications for 3D printing, from the creation of assets in stop motion movies like Coraline to the 3D printing of prosthetics! For more information on the Xplore Engineering summer camp, and other interesting opportunities with the school of Engineering, visit www.engin.umich.edu/mconnex

Printing in 3D
Use 3-dimensional printers in the U of M 3D printing lab to to program a 3D model and even take home one of your own. You’ll also get a behind-the-scenes tour of the 3D lab.
Thursday session 3
Photo: Jessica Knedgen
MconneX
www.engin.umich.edu/mconnex

May 26, 2015June 29, 2022

The Kelsey Museum – Visualizing Lost Cylinder Seals

2D illustration of one of the seal imprints used to generate a 3D model

The Kelsey Museum houses a collection of more than 100,000 ancient and medieval objects from the civilizations of the Mediterranean and the Near East. Margaret Root, curator of the Greek and Near Eastern Collections at the Kelsey Museum, came to the Duderstadt Center with the impressions of several ancient cylinder seals. A cylinder seal is a small cylindrical tool, about one inch long, used in ancient times to engrave symbols or marks. When rolled in wet clay, the seal would leave an impression equivalent to a person’s “signature.” These signatures were commonly used to sign for goods when trading. Some of the earliest cylinder seals were found in the Mesopotamian region.The Kelsey Museum wanted to re-create these seals from the impressions to generate 3D prototypes or for use in a digital exhibit. These exhibits would allow visitors to the Kelsey to experience the cylinder seal tradition first-hand by providing seals and clay to roll their own impressions. The problem was these seals tend to get lost over time so the museum did not have the original seals, only the imprints.

To recover the seal’s three-dimensional form, Margaret Root provided the Duderstadt Center with an outline of the imprints in Adobe Illustrator. From the outline, Stephanie O’Malley of the Duderstadt Center added varying amounts of grey to generate a depth map, where the darkest areas were the most inset and the lightest areas were the most protruding. With a depth map in place she was then able to inset areas on a cylindrical mesh in Zbrush (a 3d sculpting software) to re-create what the cylinder seal (the example seal is the “queen’s seal” ) would have looked like. Shawn O’Grady has printed one of these seals already.

A 3D render of the re-created cylinder seal.

The Duderstadt Center has since obtained the new Projet 3D printer, and plans are now underway to eventually print one of these on the Projet since it has a much higher print resolution and these seals are typically quite small.

To check out more at the Kelsey Museum, click here.

September 19, 2013August 25, 2020

Low-Cost Dynamic and Immersive Gaze Tracking

From touch-screen computers to the Kinect’s full-body motion sensor—interacting with your computer is as simple as a tap on the screen or a wave of the hand. But what if you could control your computer by simply looking at it? Gaze tracking is a dynamic and immersive input system with the potential to revolutionize modern technology.

Realizing this potential, Rachael Havens, a member of the Duderstadt Center and UROP student, investigated ways of integrating an efficient and economical gaze tracker into our system. However since this powerful tool is overlooked by many people, this task proved to be quite the challenge. Current professional gaze tracking tools are highly specialized and require buyers to drop tens of thousands of dollars for a single system. The open-source alternative is not much better, as it sacrifices quality for availability. Since none of the aforementioned options were ideal, a custom design was pursued.

Inspired by the EyeWriter Project, the Sony PS Eye was hacked. We systemically replaced the Infrared filtered lens and lens mount, adding a visible light filter and installing our own 3D printed lens mount. With little expense, we transformed a $30 webcam into an infrared, head-mounted gaze tracker. The Duderstadt Center didn’t stop there, however; we integrated this gaze tracker’s software with Jugular, an in-house interactive 3D engine. Now a glance from the user doesn’t just move the cursor on a desktop, it selects objects in a 3D virtual environment of our own design.

April 24, 2013August 26, 2020

Concentrate Media: On the Cutting Edge of 3D

Patrick Dunn, Concetrate Media:

“Because there are different paths one can take, it helps to go to one location where there are multiple individuals who are well-versed in those different paths,” … “It really helps people to find their direction.”

The accessibility of U-M’s facility makes it a particularly rare gem. The lab provides unique ease of access to technology that’s on the rise but still fairly exotic to the general public, like the 3D printers. And in the case of the MIDEN, it’s one of only a couple of publicly accessible similar facilities nationwide.

“Generally these technologies are locked behind doors because they’re very expensive, they require expertise, and they can be very delicate,” … “Here, people say, ‘We want to use the MIDEN,’ and we say ‘Okay, we’ll help you do what you want to do.'”

Visit Story at ConcentrateMedia