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STRESS RELIEF

COFFEE CUP TAKES ON WHOLE NEW MEANING

3DomFuel, Fargo, N.D., created specialty 3D-printing filaments by add-

ing value to waste byproducts. Buzzed is the first beer filament, made using

byproducts from the brewing process. The outcome creates visible grain frag-

ments and natural color gradients on the finished 3D-printed products.

There is also a filament made partially with coffee waste, called Wound

Up. It has a distinct coffee color, and even smells like coffee while printing. The

filament generates products with a rich brown color and a noticeable natural

grain. Using Wound Up, c2renew, also in Fargo, created a 3D-printed coffee

mug, so people can literally drink coffee out of a “coffee” cup.

Finally, 3DomFuel released a hemp filament called Entwined, which uses

no dyes, allowing it to maintain a natural brown hue. It is almost iridescent in

its ability to showcase different shades and densities within the same printed

object.

3dfuel.com.

3D PRINTING OVERCOMES HAIRY CHALLENGE

Researchers in Massachusetts Institute of Technology’s Media Lab, Cam-

bridge, found a way to bypass a major design step in 3D printing, to quickly and

efficiently model and print thousands of hairlike structures. Instead of using

conventional computer-aided design (CAD) software to draw thousands of

individual hairs on a computer—a step that takes hours to compute—the team

built a new software platform called cilllia that lets users define the angle,

thickness, density, and height of thousands of hairs, in just a few minutes.

Using the new software, researchers designed arrays of hairlike structures

with a resolution of 50

μ

m. Playing with various dimensions, they designed and

then printed arrays ranging from coarse bristles to fine fur, onto both flat and

curved surfaces, using a conventional 3D printer. Could the technology be used to print wigs and hair extensions? Possibly, say

researchers. But that is not their end goal. Instead, they are seeing how 3D-printed hair could perform useful tasks such as sensing,

adhesion, and actuation.

news.mit.edu.

COIN TOSS COULD CURE POLITICAL UNCERTAINTY

At Long-Stanton Manufacturing Co., West Chester, Ohio, the similarity of

the presidential race of 1860 and 2016 lies not in the issues but in the name of

the company’s founder, John Stanton. Records show that before Stanton start-

ed Long-Stanton Manufacturing in 1862, he owned a company in Cincinnati

that provided the illustrations, made the stamping die, and minted many of the

campaign coins of the 1860 presidential candidates. The coins contained the

etched, illustrated likeness of each candidate and were handed out to voters

asking for their support.

Today, the company honors this legacy by minting an “Indecision 2016”

campaign coin. One side features an illustrated likeness of Republican nomi-

nee Donald Trump and the other features Democratic challenger Hillary Clin-

ton. But don’t take this coin into the voting booth—it could be distracting to

those who have already made up their mind, or they may ask to borrow it.

longstanton.com.

Etched likeness of Democratic candidate Hillary

Clinton facing left and Republican candidate Don-

ald Trump facing right. Courtesy of Business Wire.

Wound Up, a 3D-printing filament made partially from

coffee waste, was used to 3D print this coffee cup.

MIT researchers attached 3D-printed hairs to a ring.

A D V A N C E D M A T E R I A L S & P R O C E S S E S | S E P T E M B E R 2 0 1 6