An Engineer’s Guide to Laser Cutting > ENGINEERING.com

YPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> 1967 had the Summer of Love, Thurgood Marshall’s confirmation to the Supreme Court and—if you’re a hockey fan—it was the last time the Toronto Maple Leafs won the Stanley Cup. There was also no shortage of engineering news in 1967, including the Apollo 1 disaster, the Saturn V rocket’s first launch and the Concorde’s debut. Here’s another event from 1967 that was arguably just as important but didn’t get nearly as much press: Peter Houldcroft, then Deputy Scientific Director at The Welding Institute in Cambridge, UK began his experiments using an oxygen assist gas to cut a 1mm-thick steel sheet with a 300W CO2 laser. This marked the beginning of using lasers for industrial material processing. Now, 50 years later, laser cutting machines account for the largest segment of the metal cutting machine market, which also includes plasma, waterjet and mechanical cutting. In the simplest terms, a CNC laser cutter uses a coherent beam of light to cut material, most often sheet metal, but also wood, diamond, glass, plastics and silicon. Broadly spe...

Suddenly, it’s not so bad being the owner of a Volkswagen TDI “clean diesel” car. The

Suddenly, it’s not so bad being the owner of a Volkswagen TDI “clean diesel” car. The settlement announced this week by VW will reward owners handsomely, a… Suddenly, it’s not so bad being the owner of a Volkswagen TDI “clean diesel” car. The settlement announced this week by VW will reward owners handsomely, according to an analysis by Autolist. Thousands of U.S. consumers have been stuck with vehicles they assumed were good for the environment. But VW admitted last fall that the onboard computer adjusted the diesel emissions when it sensed an emissions test was taking place. During the tests, the emissions were reduced to within standards. The rest of the time, the cars gave off emissions well above legal standards. As a result, VW agreed to a more than $14 billion settlement, requiring it to buy back affected vehicles and terminate leases, as well as pay consumers cash reparations. After studying the details of the deal, Autolist concludes consumers will come out ahead. The company reports nominal vehicle value has gone down an average of $2,017 because of the diesel emissions cheating scandal. Owners, meanwhile, are getting $5,100 to $10,000 settlement rep...

Seventeen picks products that we think you’ll love the most. We may earn money from the

Seventeen picks products that we think you’ll love the most. We may earn money from the links on this page. Whether you’re into a classic black roast or prefer a semi-sweet Pinkity Drinkity a la James Charles, one thing stands true: you need to invest in a cute reusable tumbler to hold it in. A quality to-go cup will keep your drink cold for hours, looks cute on your Instagram feed, and is way, way, WAY better for the environment. So make like a VSCO girl and save the turtles with these cute Starbucks tumblers that will keep your coffee cold for hours. Ahead, shop all the viral Starbucks tumblers and cups (yep, like the tortoise shell cup), plus the hidden gems you didn’t even know you needed (read: the customized to-go cup). Coffee addicts, here are the best reusable Starbucks cups you can shop now. Meet: the internet’s famed tortoise shell tumbler. This viral cup isn’t available in Starbucks stores, but you can shop it (along with coffee beans, K-cups, cold brew) on Amazon.   Make sure your barista never gets your name wrong again, with a personalized to-go cup inscribed with your name – or a really cool nickname, like Boss Bitch or something.   ...

The Log Splitter market research encompasses an exhaustive analysis of the market outlook, framework, and socio-economic

The Log Splitter market research encompasses an exhaustive analysis of the market outlook, framework, and socio-economic impacts. The report covers the accurate investigation of the market size, share, product footprint, revenue, and progress rate. Driven by primary and secondary researches, the Log Splitter market study offers reliable and authentic projections regarding the technical jargon. As per the latest business intelligence report published by Transparency Market Research, the Log Splitter market has been observing promising growth since the last few years. The report further suggests that the Log Splitter market appears to progress at an accelerating rate over the forecast period.  All the players running in the global Log Splitter market are elaborated thoroughly in the Log Splitter market report on the basis of proprietary technologies, distribution channels, industrial penetration, manufacturing processes, and revenue. In addition, the report examines R&D developments, legal policies, and strategies defining the competitiveness of the Log Splitter market players. Request Sample Report @ https://www.transparencymarketresearch.co/sample/sample.php?flag=B&rep_i...

From time to time, TTAC will highlight automotive products we think may be of interest to

From time to time, TTAC will highlight automotive products we think may be of interest to our community. Plus, posts like this help to keep the lights on around here. Learn more about how this works. Many gearheads are firm believers that a clean car runs better than a dirty one. While there is only anecdotal evidence from which to draw a conclusion about this, it cannot be denied that a clean car is worth more at trade-in time or when pulling up to the curb for your Tinder date. If washing and waxing are the fundamentals, then a clay bar can be considered extra credit. These rectangular sticks of joy are designed to be slid along your car’s paintwork, collecting all the little particles that have accumulated on its surface over time. Particles in the air, pollution, tree sap — all these things conspire to ruin paint lacquer and make your car look like something from Mad Max. Check out our octet of picks, but also make sure to schedule an entire afternoon if you’re planning to clay your car. Mister Miyagi might have advised us to wax on and wax off, but the professional detailers of the world will recommend you clay bar that thing as well for best results. (Editor’s not...

More fabrics are being crafted from materials that sound like they came straight out of a

More fabrics are being crafted from materials that sound like they came straight out of a forest. Made from bamboo, eucalyptus and coconut, the fabrics are promoted as having the ability to deter bacterial growth, but scientists say some claims aren’t proven. Bamboo fabric, a popular material for bedding, towels and clothing, has been marketed as retaining the naturally antibacterial qualities of the bamboo plant. However, a 2009 study found the fabrics are rayon made from bamboo, which doesn’t retain the plant’s properties, says textile scientist Ian R. Hardin, the study’s author. Seven commercial bamboo fabrics tested in the study were found not to be antibacterial. “The natural properties of the bamboo plant are simply not going to survive” the rayon-making process, adds Dr. Hardin, professor emeritus of textile science at the University of Georgia in Athens, Ga. Rayon is made from cellulose typically obtained from trees, but it can be obtained from bamboo, and the result is a virtually indistinguishable fabric, he says. The Federal Trade Commission filed administrative complaints in 2009 against four companies selling products labeled as b...

Why EMS captures a 12-lead EKG with the first set of vital signs

EMS is called to the residence of a 66-year-old female complaining of chest discomfort. The patient is found sitting in a kitchen chair. She is alert and oriented but highly anxious and diaphoretic. She appears acutely ill. Although this EKG meets the voltage criteria for left ventricular hypertrophy in the limb leads, it shows acute inferior STEMI. ST-elevation is present in leads II, III and aVF along with reciprocal ST-depression in leads I and aVL. Remember that left ventricular hypertrophy is usually an anterior STEMI mimic. A “Code STEMI” was called from the field. The patient was given four baby aspirin, a sublingual nitroglycerin spray and oxygen. Less than four minutes later, the patient was in the back of the ambulance and another 12-lead EKG was captured. As you can see, the EKG is now nondiagnostic for acute STEMI. This patient’s reperfusion could have been seriously delayed. But, because the paramedics obtained a 12-lead EKG with the first set of vital signs, the patient was taken rapidly to the cardiac catheterization lab, where an acute 99 percent occlusion of the right coronary artery (RCA) was identified and stented. Too often, paramedics think...

The star turn of most hackspaces and other community workshops is usually a laser cutter. An

The star turn of most hackspaces and other community workshops is usually a laser cutter. An expensive and fiddly device that it makes much more sense to own collectively than to buy yourself. This isn’t to say that laser cutters are outside the budget of the experimenter though, we’re all familiar with the inexpensive table-top machines from China. Blue and white boxes that can be yours for a few hundred dollars, and hold the promise of a real laser cutter on your table. Owning one of these machines is not always smooth sailing though, because their construction and choice of components are often highly variable. A thorough check and often a session of fixing the non-functional parts is a must before first power-on. [Extreme Electronics] bought one, and in a series of posts documented the process from unboxing to cutting. Starting with a full description of the machine and what to watch for out of the box, then a look at the software. A plugin for Corel Draw was supplied, along with a dubious copy of Corel Draw itself. Finally we see the machine in operation, and the process of finding the proper height for beam focus by cutting an inclined plane of acrylic. The series rounds o...