Collaborate Disseminate
While we know some 3D printer operators who need coffee, Washington State University is showing an improved PLA material that incorporates used coffee waste. Regular PLA is not known for being especially strong, though It isn’t uncommon for vendors to add things to their PLA to change its characteristics.
The …read more
Press brakes are a workshop staple when working with sheet metal. They’re ideal for executing accurate and repeatable bends over and over again. Typically, they’re fitted with steel tooling that can hold up to thousands of press cycles. However, such tooling is expensive, and time consuming to produce. [Anthony] recently …read more
Continue reading 3D Printed Tools For Quick Press Brake Jobs
Ordering a PCB used to be a [Henry Ford]-esque experience: pick any color you like, as long as it’s green. We’ve come a long way in the “express yourself” space with PCBs, with slightly less than all the colors of the rainbow available, and some pretty nice silkscreening options to …read more
With July slipping away and the deadline approaching, the Project Egress builds are pouring in now. And we’re starting to see more diversity in the choice of materials and methods for the parts being made, like these two latches made with very different methods by two different makers.
For the …read more
Continue reading Project Egress: Two Ways to Latch the Hatch
Ground plastic bits go in one end, finished 3D-prints come out the other. That’s the idea behind [HomoFaciens]’ latest build: a direct-extrusion 3D-printer. And like all of his builds, it’s made from scraps and bits most of us would throw out.
Take the extrusion screw. Like the homemade rotary encoders …read more
Continue reading No Filament Needed in this Direct Extrusion 3D-Printer
China’s cyber-theft and cyber-espionage operations are accelerating to the point that they can “degrade core U.S. operational and technological advantages,” according to a congressionally mandated assessment of the Chinese military the Pentagon issued Friday. Last year, for example, Chinese intelligence officers were indicted for allegedly conspiring to steal technological information on turbofan engines. China’s efforts to steal sensitive U.S. military-grade equipment more broadly targeted aviation and antisubmarine warfare technologies last year. “The threat and the challenge is persistent. The Chinese remain very aggressive in their use of cyber,” Assistant Secretary of Defense Randall G. Schriver said Friday during a press briefing on the report. China’s efforts to boost its technological prowess go beyond thefts and intrusions, the Pentagon said. Beijing also leverages its intelligence services and Chinese nationals’ access to technologies to try building up its military capabilities while checking adversaries’, the report notes. And although the Pentagon assesses that China believes its capabilities and personnel “lag […]
The post China making ‘rapid progress’ on potency of cyber-operations, Pentagon says appeared first on CyberScoop.
Continue reading China making ‘rapid progress’ on potency of cyber-operations, Pentagon says
When you really start fine-tuning your 3D printer, you might start to notice that even the smallest things can have a noticeable impact on your prints. An open window can cause enough of a draft to make your print peel up from the bed, and the slightly askew diameter of …read more
Continue reading Printable Filament Spool Hub Skips the Bearings
The ABS and PLA that goes into your 3D printer is sold in two forms. The first, naturally, is filament. The second is plastic granules, the raw material for your filament, and costs an order of magnitude less than the filament itself. For years we’ve been seeing machines that either print directly with plastic granules or are converted into filament with fancy filament-extruding machines. Now we can do it the other way. [Aubrey Woern] and [Joshua Pearce] of Michigan Tech have been working on a polymer pelletizer chopper that takes plastic filament and turns it into pellets.
The system uses …read more
Continue reading The Filament Pelletizer For Fused Granular Fabrication
[Integza] built a Tesla turbine and wanted to know how fast it was spinning. However, he didn’t have a tachometer, and didn’t want to buy one. After a false start of trying to analyze the audio to measure the speed, he decided to use a tried-and-true method. Let the wheel break an infrared (IR) optointerruptor and count the spokes of the wheel as they go by. If you know the spacing between the spokes, you can compute the speed. There was only one problem: it didn’t work.
Turns out, PLA is at least somewhat transparent to IR. Knowing that it …read more
Chinese hackers planted a malicious chip into computer equipment used by a slew of US companies, including Apple and Amazon, according to a report from Bloomberg Businessweek. Continue reading The Worst Hack in Science Fiction Has Allegedly Already Happened in Real Life