engineer print


This is an “Inception Drive,” it’s based on the strain wave gear/harmonic gear.

They’re also called pure rolling transmissions.

Gearing friction is rolling, making them incredibly efficient compared to traditional transmissions, and because of well-machined teeth they’re very accurate too.

Robots need them for smooth high-torque gear reduction, but they can also be used to increase speed, reverse direction, and even go neutral to stop.

Notice how fast the green arrow rotates compared to the yellow arrow in this 3D printed drive… that’s an awesome reduction ratio.

60 seconds on...cheaper, 3D-printed prosthetics

Credit: The University of Manchester – School of MACE. A 3D-printed prototype prosthetic developed by the Manchester team.

What’s new?

A 3D-printed robotic prosthetic hand, costing £307 has been developed by a team at the University of Manchester, UK.

Who is involved?

The prosthetic was produced by final year mechanical engineering student Alexander Agboola-Dobson and his team.

How is it novel?

Advanced robotic prosthetic limbs can cost upwards of £25,000, while basic robotic hands start at £3,000. This prosthetic costs £307.

The prosthetic was created using stereolithography (SLA), a form of 3D printing, and a resin plastic. Using 3D printing allowed costs to be saved. According to Agboola-Dobson, ‘specialised dies, tools, and moulds required for injection moulding are not needed in 3D printing, massively reducing unit costs of custom manufactured components’.

Savings were also made using low-cost electronics. Instead of opting for small and powerful linear actuators to operate the prosthetic’s fingers, which are commonly used in 3D-printed prosthetics, the team used low-cost rotary servos.

To find out more see the upcoming July issue of Materials World.

it’s dec 3rd where i am already so here’s this coloured pencil scribble because that’s all i’m good for

you know how you can go to a supermarket and buy those pre-made cakes with cartoons like winnie the pooh or thomas the tank engine printed on them with the implication that they’re for children’s birthday parties? they go to the store together and buy one of those

Printed tunnels

Credit: Crossrail Ltd

The Elizabeth line, as part of the Crossrail project in London –  currently the largest construction project in Europe – will feature concrete panels made using FreeFAB, a large-scale 3D printing technology that it combines the benefits of old and new construction technology.

Using a 3D printer with a build volume of 30 x 3.5 x 1.5 metres, large moulds are printed from a specially designed wax and used to cast the panels. 

3D printing makes it easier, faster and cheaper to create complex shapes. The Crossrail project involves panels that curve along two different axis, for which a mould could take about eight days.

The use of printed wax moulds is also more environmentally friendly, as they can be melted and the re-used.


Francis Bedford :: Bangor, View on Suspension Bridge, 1880 / src: National Science and Media Museum
A photographic view across the Menai suspension bridge in Bangor, North Wales. 

more [+] by this photographer


New 3-D Printer Uses Light to Build Objects in Minutes

The next generation of desktop 3-D printers might do away with the excruciatingly slow process that current units use. Researchers have unveiled a printer that replaces the current extruder nozzle that squeezes out melted plastic one layer at a time with light and oxygen. 

The makers of the Carbon3D printer have demonstrated a technique they call continuous liquid interface production (CLIP), which grows 3-D printed parts out of a liquid resin bath. Ultraviolet light and oxygen work to build a stronger part in layers just tens of microns wide. Build times can be reduced from hours to minutes, they say.

Their work builds on the process called stereolithography, an additive manufacturing technique developed in the 1980s that builds parts layer by layer with liquid resin cured by light. 

“By rethinking the whole approach to 3-D printing, and the chemistry and physics behind the process, we have developed a new technology that can create parts radically faster than traditional technologies by essentially ‘growing’ them in a pool of liquid,” said University of North Carolina, Chapel Hill chemistry professor Joseph DeSimone, who coinvented the technique and is also Carbon3D’s CEO. See more images and learn more below.

Keep reading


Preventing malaria isn’t enough. She’s researching a way to treat infectious diseases of the past, present and future. Inspired by Alexis Kaushansky, today’s scientist researching tomorrow’s cures.


Geometric Desserts
Project from Dinara Kasko creates desserts using silicon cases designed with 3D software and 3D printed, all with geometric forms

A graduate from the University of Architecture and Design, Dinara worked as an architect-designer and a 3D visualizer. She liked what she was doing as an architect, but now is more interested in Patisserie.
“It just became more interesting to me at some point. From the moment I got into Patisserie I decided to try to add something new into it. I realized that the appearance is as important as taste. I tried to model my own moulds and print them with 3D printer and I liked what I got.”

Made with Instagram

Electron soars on inaugural test flight, paving way for commercial operations.

Rocket Lab broke through the smallsat launch industry Thursday (May 25) with the first launch of its Electron rocket. Dubbed “It’s a Test” by the U.S.-based company, Electron carried a sensor package in lieu of satellites for this mission, providing engineers with over 25,000 channels of data.

Nine Rutherford engines – made in-house by Rocket Lab – powered the 56-foot rocket off its seaside launch complex on New Zealand’s Mahia peninsula. Launch Complex-1 is the country’s first orbital launch facility. Liftoff occurred at 4:20 UTC, or 12:20am EDT May 25.

Two and a half minutes after liftoff the rocket’s first stage fell away and a single Rutherford engine on the upper stage ignited. The vehicle’s payload fairing jettisoned as the second stage continued its powered climb to orbit.

Although the vehicle did reach space – defined as 62 miles above the Earth’s surface – Rocket Lab indicated after the flight that Electron did not achieve orbital velocity. The company did not go into detail on what the potential issues with the flight were that caused its sensor package to not achieve orbit.

Rocket Lab’s Launch Complex-1, located on Mahia Point, New Zealand. Orbital imagery courtesy Digital Globe.

Electron is one of only a handful of rocket’s designed entirely in the 21st century. As such, it features a plethora of unique technologies that make it stand out against other vehicles in the commercial launch market. Each Rutherford engine is 3D printed and is fed by all-electric pumps, earning the nickname “the battery-powered rocket”. The use of composite materials for the entire rocket’s body has never been done before and gives Electron a sleek black appearance.

Electron is the first rocket in a burgeoning class of small launchers to take flight that will cater to the small satellite market. Vector Space Systems recently completed a subscale, single-engine test launch of their Vector-R vehicle, however, full-scale test flights still need to occur.

Rocket Labs hopes to fly two more test flights in the coming months before Electron is declared operational by the end of 2017.

Click here for our preview story on Electron’s flight.

P/c: Rocket Lab

I’ll try this:
1/100 days of productivity!

I started this “competition” long time ago, but now I think it’s the best time to improve my skills for this challenge.

After last two math exams (Calculus 2 and Linear Algebra, both passed with the highest marks), now it’s time to dedicate myself to MathLab for Engineering.

Exam on date 02/15… it’s near! 😁

3d-printed “legos” we made in lab today - the blue one was made using fused deposition molding, the clear one with stereolithography

both were printed in runs of five, print time for each run was about an hour (not bad, especially for the stereolithographer!)

(you can still see traces of the orange polymer we used to build the supports on the first one, and the second one needs some more uv exposure to completely set and stop being sticky… post-processing is a bitch.)

classwork can be cool, sometimes :)