Category: Uncategorized

Zipline Dive Catapult

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They guys from DD Squad rigged up a crazy zipline with a hard stop in the middle, making their athletes catapult into the river below when they hit the sweet spot. Given their acrobatic skills, they had to show off with some crazy flips.

fun

via The Awesomer https://theawesomer.com

January 16, 2020 at 02:45PM

An Inside Look at How AR-15 Barrels Are Made: DC Machine

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U.S.A. –-(Ammoland.com)- DC Machine is the biggest machining company you may never have heard of. However, you are likely familiar with Palmetto State Armory, located in Columbia, South Carolina. PSA is one of the fastest-growing gun companies in the history of ever. While the operate a handful of retail stores, they sell lots and lots of guns and shooting gear across the country online and through other retail outlets. As it so happens, Palmetto State Armory and DC Machine are sister companies. I recently had the opportunity to tour the DC Machine operation and get a first-hand look at how quality barrels are made.

Before we get started, I should mention that we’re not talking some small operation here. While I don’t want to get too specific about company secrets, I will say that the company produces way more than “hundreds” of barrels per day. A lot more. Does that give you a picture? I was stunned by the volume pouring out of this Summerville, South Carolina manufacturing plant.

Without further delay, let’s embark on a pictorial tour of how DC Machine produces the barrels you and I see in the market.

The raw materials for barrel manufacture show up at the back door as steel bar stock like this. You’ll see different lengths of these as it doesn’t make sense to cut unnecessary material when making a shorter barrel.

You’ll notice that some raw material stock bars are different colors. This is on purpose. DC Machine has their suppliers coat the raw material with different color finishes to denote the specific type of steel of each bar. It doesn’t matter to you as the finish is machined away during the process, but it helps the production line ensure that the right steel is used on the right barrel.

Step one in the process is to drill out the bore. There’s no rifling at this stage, just a smooth hole of the correct diameter for the final caliber. From this point on, the reference point for machining operations is the bore itself. All exterior material is machined away using the “hole” as a guide.

DC Machine uses a top-secret button rifling process to wring maximum consistency and accuracy out of the barrels. I was able to watch a few being made and was stunned by the smoothness and speed of the operation. Sorry, we can’t show it here. Trade secret!

Again using the bore as the guide, the barrel blanks are “trued up” by trimming away all excess material that is not perfectly aligned with the bore. The result is a perfect cylinder with the bore in the absolute center. This helps with machining the final barrel contours later in the process.

Next up more material is removed and the contours of the final barrel begin to take shape.

During the process from first step on, each machine and step is closely monitored by quality control and the results show up in real-time on plant floor monitors. In fact, Quality Engineer Mark Petty gets notifications on his smartphone the second anything in the process starts to drift away from strict tolerances.

At this stage, the breech end of the barrels are threaded for attachment of the barrel extension and chambers are cut.

Once barrels start to take shape, they’re tested by a laser inspection machine like this one to ensure that all tolerances are far, far better than mil-spec. Close inspection like this helps the production team know exactly when a certain toolhead in a certain machine needs maintenance or replacement.

If you look closely at the two barrels on top, you’ll see the one on the left has an unfinished muzzle. On the right you can see the crown of the muzzle has been cut. The idea is to make sure that the internal rifling comes to an abrupt and perfectly clean and smooth end. The tiniest burr or imperfection can harm accuracy as this is the last contact a moving bullet has with the barrel.

DC Machine also makes barrel extensions. Lots and lots of them.

Once the barrel extensions are attached, the process is almost complete.

 

The barrels have been monitored, measured, and lasered for quality control throughout the process. At the very end of the line, just before packaging, is a final visual inspection and hand buffing to remove any rough spots on the exteriors from the machining process.

Part of the reason that DC Machine can produce so many quality barrels per day is the investment in automated computer-controlled machining equipment. Most steps in the process have some way of working on multiple parts of the same type concurrently. Those that don’t have automated feed systems, like this, to process parts as quickly as possible.

This single milling machine is cutting eight upper receivers in one operation. By changing out eight parts at once, the operator can produce far more receivers per hour.

DC Machine receives forged aluminum upper receiver blanks. Once in this plant, they’re machined to final completion.

Note now many toolheads are in the conveyor of this single machine. It extends almost to the floor. The more a single machine can do, the fewer changes from machine to machine. That leads to better consistency and higher production throughput.

Ever wondered how that receiver engraving is done? Right here in the laser engraving department. Using the laser is not only fast and precise, it allows for easy changes to the engraving design from batch to batch.

DC Machine and Palmetto State Armory often product “meme engravings” on AR lower receivers. This one benefits the Virginia gun rights movement. You might notice the “Lady Freedom” is wearing night-vision goggles, toting an AR-15, and standing on a tyrant.

Sales Manager and Quality Engineer Mark Petty has this indoor rifle testing range literally in his office. If there are questions, or if he simply wants to field test production quality, he can do it right here,

The modern manufacturing process is stunning. This is exactly how the folks at Palmetto State Armory can produce and sell quality rifles at reasonable prices. One of the most fun parts of the tour was seeing Mark’s bragging collection. He showed me a couple of custom barrels (I won’t mention the names, but they’re expensive) that he won betting on the accuracy of a standard DC Machine barrel versus that of one listing at five times the price. That’s good stuff for you and I.

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About

Tom McHale is the author of the Practical Guides book series that guides new and experienced shooters alike in a fun, approachable, and practical way. His books are available in print and eBook format on Amazon. You can also find him on Facebook, Twitter, Instagram and Pinterest.

The post An Inside Look at How AR-15 Barrels Are Made: DC Machine appeared first on AmmoLand.com.

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January 15, 2020 at 12:05PM

Google v. Oracle: Amici Weigh in on Why the Supreme Court Should Reverse the Federal Circuit’s Rulings

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Guest post by Professor Pamela Samuelson, Berkeley Law School

In the past week 28 amicus curiae briefs were filed in the Google v. Oracle case, including one written by me and Catherine Crump (of which more below). All but two support reversal of one or both of the Federal Circuit’s copyrightability and fair use rulings.[1]

Especially significant are IBM’s brief with Red Hat arguing against the copyrightability of computer interfaces and Microsoft’s brief criticizing the Federal Circuit’s unduly rigid fair use analysis and indifference to the need for flexible rules that promote interoperability in today’s highly connected world. The briefs are substantively excellent, and significant because these firms are such prominent developers of software.

For those interested in the case who are not computing professionals, I recommend the amicus briefs submitted by 83 computer scientists and by the Developers Alliance which explain the Java API technology and why reuse of Java declarations and interfaces generally is so important to enabling compatibility. Several other briefs, including one for the Center for Democracy and Technology et al., and another for R Street and Public Knowledge, offer numerous examples of compatible software systems that benefit consumers as well as software developers

By my count, more than half of the 28 amicus briefs focus only on the copyrightability issue and another 9 address both the copyrightability and fair use issues. Only 4—the Microsoft, Tushnet, Snow, and Rauschenberg Foundation briefs–address only fair use. This was a something of a surprise given that the fair use decision seems quite vulnerable to challenge. After all, a jury rendered a verdict in favor of Google’s fair use defense, and appellate courts are supposed to defer to jury verdicts. Several amicus briefs take the Federal Circuit to task for substituting its judgment on the merits for the jury’s as to issues about which there was conflicting evidence in the record. Also much criticized are the Federal Circuit’s analysis of the four fair use factors and the manner in which it weighed the factors together.

One very pragmatic reason why some amici would prefer that the Court rule on the copyrightability issue over the fair use issue is that fair use is a fact-intensive, complex, and much debated limitation on copyright. Google may be able to litigate software interface copyright cases for a decade or more, as it has done in this case, but startups and other small and medium-size companies as well as open source developers would prefer the certainty of a no-copyright-in-interfaces rule, as several amicus briefs pointed out. If the Court rules that interfaces are not protectable by copyright law, litigation over reuses of interfaces is much less likely. And if some developer does bring suit, chances are good that the case can be won on a motion to dismiss or for summary judgment

Software developer and industry association amici point to a longstanding consensus on the distinction between interfaces and implementations: interfaces should be free for reuse as long as developers reimplement the interfaces in independently created code. The Federal Circuit’s Oracle decisions have upset settled expectations in the industry, and if the Court upholds them, it would have, as Microsoft asserts, “potentially disastrous consequences for innovation.”

The American Antitrust Institute was among the amici that emphasized the potential for copyright in program interfaces to have anti-competitive effects by entrenching dominant firms and creating barriers for new entrants in the software business. This is particularly of concern in view of network effects which, even without interface copyright monopolies, make it difficult for users and developers to switch to new systems.

The Computer & Communications Industry Association and the Internet Association amicus brief provides a historical review of the evolution of software copyright caselaw. Although a few early decisions construed copyright as providing broad protection to program structures such as interfaces, landmark decisions by the Second and Ninth Circuits recognized that interfaces which constitute the functional requirements for achieving compatibility among programs should not be protectable by copyright law. Other courts followed these rulings. The Oracle decision deviates from this body of caselaw. Some amici regard interfaces as patent, not copyright, subject matter.

The amicus brief Catherine Crump and I co-authored and submitted on behalf of 72 intellectual property scholars positioned the pro-compatibility decisions within the framework of the Supreme Court’s 19th-century rulings in Perris v. Hexamer and Baker v. Selden, which originated the exclusion of methods and systems and their constituent elements from the scope of copyright; dozens of decisions applying these exclusions; their codification in 17 U.S.C. § 102(b); and caselaw applying these exclusions to software interfaces that enable compatibility. Our brief also explains why the District Court’s alternative ruling in favor of Google’s merger defense was consistent with Baker and its progeny and that merger provides a sound basis for finding that program interfaces that enable compatibility, such as the Java SE declarations, are unprotectable by copyright law.

Oracle will obviously have a different take on these issues when it files its brief due February 12. Amici in support of its position must submit their briefs within the following week.

Google will have an opportunity to file a reply brief in mid-March. Oral argument before the Court may be scheduled in late March.

= = = = =

[1] Although the American Intellectual Property Law Association is one of the briefs in support of neither party, the substance of its arguments on both the copyrightability and fair use arguments are quite close to the positions of Google and pro-interoperability amici.  The other “neutral” amici were the Robert Rauschenberg and Andy Warhol Foundations which expressed concern about a possible interpretation of fair use that would undermine artistic freedom to engage in creative reuses by artists.

legal_stuff

via Patent Law Blog (Patently-O) https://patentlyo.com

January 14, 2020 at 06:26PM

There Isn’t A Single American Car On This 2020 List Of Vehicles People Keep For At Least 15 Years

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geeky,Tech,Database

via Lifehacker https://lifehacker.com

January 14, 2020 at 05:22PM

A Homemade Belt-Fed Full-Auto Shotgun? Yes, Please!

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In this pair of short-but-sweet videos, we see the delightful product of an inventive mind: A fully-automatic belt-fed 12 gauge shotgun! Oh my.

We have seen homemade guns before. You have probably even seen homemade machineguns before. But have you ever seen a homemade machinegun which fires 12 gauge shotgun shells — and which is belt-fed, thus not requiring a magazine?

Well, now’s your chance.

It’s pretty wonderful to me, but it jams a number of times in the video — which is only 32 seconds long. So I’d say it is in need of refinement… but it sure does look like fun.

Here’s another video of what appears to be the same belt-fed shotgun machinegun (I really enjoy saying that) — if not, it’s very similar — and again, it jams pretty often. But oh, the BOOMBOOMBOOMBOOM when it does run is well worth the watch!

The post A Homemade Belt-Fed Full-Auto Shotgun? Yes, Please! appeared first on AllOutdoor.com.

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January 14, 2020 at 05:02PM

How Ice Cream Cones Are Made

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Making waffle cones at home is pretty darned easy to do. But when you need to churn out millions of these tasty treats every month, you need some serious industrial equipment. In this classic video from How It’s Made, they show us just how factories mass-produce waffle, sugar, and cake cones.

fun

via The Awesomer https://theawesomer.com

January 14, 2020 at 12:30PM

How to Cancel Your Disney+ Subscription

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Have you had your fill of Disney+? Then it might be time to cancel your subscription. In this article, we show you how to cancel Disney+, and explain what that means.

There are many reasons why you may be considering canceling your Disney+ subscription. Whether it’s the lack of new content, the price, or a better option becoming available.

Thankfully, cancelling Disney+ is fairly straightforward. And if you want to completely untangle yourself from Disney, we’ll also show you how to cancel your Disney account too.

How to Cancel Disney+

As mentioned, canceling your Disney+ subscription doesn’t take long at all. You can finish the process in less time than it took to sign up for Disney+. Simply follow the steps below if using your browser:

1. Log into Disney+ on your browser.
2. In the upper right-hand corner, hover your cursor over your profile image.
3. From the menu options, scroll down to and press Account.
4. On the account page, click Billing Details.
5. Afterward, you’ll see a page summarizing your subscription information. Look for the text that says Cancel Subscription and press it.
6. You’ll get another alert asking if you’re sure you want to cancel. Press the red Completion Cancellation button.
7. You’ve now canceled your Disney+ subscription.

If you decide to cancel Disney+ via the app, it will take one extra step. Sadly, you can’t directly cancel your subscription via just the app. It will still follow roughly the same process, but you’ll finish canceling it via your mobile browser.

Just follow these steps to cancel your Disney+ subscription via the app:

1. Open up the Disney+ app.
2. In the bottom right-hand corner, press on your profile image.
3. From the menu options, scroll down to and press Account.
4. On the account page, click Billing Details. The app will now open your mobile browser.
5. You’ll need to sign-in if you haven’t already. Once logged in, click Billing Details.
6. Afterward, you’ll see a page summarizing your subscription information. Look for the text that says Cancel Subscription and press it.
7. You’ll get another alert asking if you’re sure you want to cancel. Press the red Completion Cancellation button.
8. You’ve now canceled your Disney+ subscription.

How Canceling Disney+ Impacts Your Billing Cycle

If you’ve just canceled your Disney+ trial, it’s very straightforward.

You’ll receive no charges for Disney+ as long as you cancel the trial before your billing cycle begins. If you want to prevent this from the start, you can preemptively cancel Disney+ at the beginning of your trial. You’ll still get the service for the trial’s full seven days, and you won’t have to worry about any charges.

For anyone already paying for the service, you’re on a monthly cycle. If you decide to cancel Disney+, you can cancel at any time during the billing cycle. You’ll then be able to carry on watching Disney+ until you lose access on the next billing date.

In short, just make sure to cancel Disney+ before the start of the new month to avoid an additional charge. But before you go, make sure to check out the best classic films on Disney+.

How to Delete Your Disney Account

One of the overlooked aspects of testing out Disney+ is the need to create a Disney account. During your initial Disney+ registration, you don’t get many options. You’re only able to influence what emails you receive and whether your payment information gets stored.

If you want to remove all of your stored information, you should unsubscribe from Disney’s emails and potentially delete your Disney account altogether.

To take this optional extra step, simply follow these steps:

1. Head to Disney’s Communication Choices website.
2. Scroll down to Manage Your Registration Account
3. Click on the Disney, ESPN, ABC, Marvel, and Star Wars accounts link.
4. You’ll be prompted to log in. Use the same username and password to log in that you used for Disney+.
5. Scroll first to the Email Preferences heading and click Manage Your Email Subscriptions. Another browser tab will open.
6. Select either Unsubscribe from All or individually uncheck Disney+ and/or The Walt Disney Family of Companies. You can now close this tab.
7. Return to your previous window and look for the Delete Account heading.
8. Press Delete Account.
9. If you have an active Disney+ subscription, you’ll see a warning notice stating you have one. If you see this, you won’t be able to delete your account directly.
10. You can wait out your Disney+ subscription then return to delete your account. Otherwise, follow-up with Disney Guest Services via their contact option for assistance in deleting your account.
11. If you don’t have an active subscription then just select Yes, delete this account.

If you have any reservations, you can restore your account until 14 days after the deletion request. So if you have any regrets after deleting your Disney account, you have a safety net in place.

What Happens After You Cancel Disney+

Now that you know how to cancel Disney+, you’re equipped with the knowledge you need if and when you decide it’s no longer for you. It’s a quick process, and it’s just as easy to restore your subscription. Perhaps when a new season of The Mandalorian drops.

Even if you do cancel your Disney+ subscription, that doesn’t necessarily mean you have fallen out of love with Disney. So, with that in mind, here are the best Disney gifts for Disney fans, whether that’s you or someone else in your social circle.

Read the full article: How to Cancel Your Disney+ Subscription

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January 14, 2020 at 12:56PM

More Defense Attorneys Arguing AR-15 Lowers Aren’t Firearms…And They’re Winning

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January 13, 2020 at 03:23PM

Spaghetti Western Mandalorian

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The Mandalorian certainly owes alot to western films like A Fistful of Dollars and The Good, the Bad, and the Ugly. But what would it have looked like if it actually were a spaghetti western? Kingkida’s stylized trailer does a great job imagining just that, complete with the proper music, typeface, and film grain.

fun

via The Awesomer https://theawesomer.com

January 14, 2020 at 09:30AM

MySQL Workbench 8.0.19 has been released

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Dear MySQL users,

The MySQL developer tools team announces 8.0.19 as our
General Availability
(GA) for MySQL Workbench 8.0.

For the full list of changes in this revision, visit
https://dev.mysql.com/doc/relnotes/workbench/en/news-8-0.html

For discussion, join the MySQL Workbench Forums:
http://forums.mysql.com/index.php?152

The release is now available in source and binary form
for a number of
platforms from our download pages at:

http://dev.mysql.com/downloads/tools/workbench/

Enjoy!

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January 13, 2020 at 01:16PM