A Speed Loader For Your 3D Printer Filament

August 6, 2025 by 23 Comments

Reloading filament on a 3D printer is hardly anyone’s favorite task, but it’s even worse when you’re trying to shove stiff filament down a long and winding Bowden tube. Enter the speed loader from [Mr Flippant], which aims to take the pain out of this mechanically-frustrating chore.

The design is simple enough. It’s a small handheld tool that uses a 12 VDC gear motor to drive a set of Bondtech-style drive gears that you might find in an extruder. They’re assembled in a 3D printed housing with a microswitch to activate the motor, and a 9 volt battery to supply the juice.

To use the device, first thread the filament into the beginning of the Bowden tube. The idler gear is on a hinge, such that clamping it into position around the filament with the main gear activates the microswitch and turns the motor on, driving the filament all the way to the extruder. Job done! [Mr Flippant] notes that the filament should be as straight and unkinked as possible for best results, but that’s good advice when 3D printing in general.

Funnily enough, around these parts, when we talk about speed loaders, we’re usually discussing tapes.

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Farewell Shunsaku Tamiya: The Man Who Gave Us The Best Things To Build

July 31, 2025 by 36 Comments

In the formative experiences of most Hackaday readers there will almost certainly be a number of common threads, for example the ownership of a particular game console, or being inspired into engineering curiosity by the same TV shows. A home computer of a TV show may mark you as coming from a particular generation, but there are some touchstones which cross the decades.

Of those, we are guessing that few readers will not at some point have either built, owned, or lusted after a Tamiya model kit at some point over the last many decades, so it’s with some sadness that we note the passing of Mr. Tamiya himself, Shunsaku Tamiya, who has died at the age of 90.

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A History Of Pong

July 28, 2025 by 8 Comments

Today, creating a ground-breaking video game is akin to making a movie. You need a story, graphic artists, music, and more. But until the middle of the 20th century, there were no video games. While several games can claim to be the “first” electronic or video game, one is cemented in our collective memory as the first one we’d heard of: Pong.

The truth is, Pong wasn’t the first video game. We suspect that many people might have had the idea, but Ralph Baer is most associated with inventing a practical video game. As a young engineer in 1951, he tried to convince his company to invest in games that you could play on your TV set. They didn’t like the idea, but Ralph would remember the concept and act on it over a decade later.

But was it really the first time anyone had thought of it? Perhaps not. Thomas Goldsmith Jr. and Estle Ray Mann filed a patent in 1947 for a game that simulated launching missiles at targets with an oscilloscope display. The box took eight tubes and, being an oscilloscope, was a vector graphic device. The targets were physical dots on a screen overlay. These “amusement devices” were very expensive, and they only produced handmade prototypes.

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The Death Of Industrial Design And The Era Of Dull Electronics

July 23, 2025 by 194 Comments

It’s often said that what’s inside matters more than one’s looks, but it’s hard to argue that a product’s looks and its physical user experience are what makes it instantly recognizable. When you think of something like a Walkman, an iPod music player, a desktop computer, a car or a TV, the first thing that comes to mind is the way  that it looks along with its user interface. This is the domain of industrial design, where circuit boards, mechanisms, displays and buttons are put into a shell that ultimately defines what users see and experience.

Thus industrial design is perhaps the most important aspect of product development as far as the user is concerned, right along with the feature list. It’s also no secret that marketing departments love to lean into the styling and ergonomics of a product. In light of this it is very disconcerting that the past years industrial design for consumer electronics in particular seems to have wilted and is now practically on the verge of death.

Devices like cellphones and TVs are now mostly flat plastic-and-glass rectangles with no distinguishing features. Laptops and PCs are identified either by being flat, small, having RGB lighting, or a combination of these. At the same time buttons and other physical user interface elements are vanishing along with prominent styling, leaving us in a world of basic geometric shapes and flat, evenly colored surfaces. Exactly how did we get to this point, and what does this mean for our own hardware projects?

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Don’t Turn That Old System On, First Take It Apart

July 21, 2025 by 35 Comments

When you first get your hands on an old piece of equipment, regardless of whether it’s an old PC or some lab equipment, there is often the temptation to stick a power lead into it and see what the happy electrons make it do. Although often this will work out fine, there are many reasons why this is a terrible idea. As many people have found out by now, you can be met by the wonderful smell of a Rifa capacitor blowing smoke in the power supply, or by fascinatingly dangly damaged power wires, as the [Retro Hack Shack] on YouTube found recently in an old Gateway PC.

Fortunately, this video is a public service announcement and a demonstration of why you should always follow the sage advice of “Don’t turn it on, take it apart”. Inside this Gateway 2000 PC from 1999 lurked a cut audio cable, which wasn’t terribly concerning. The problem was also a Molex connector that had at some point been violently ripped off, leaving exposed wiring inside the case. The connector and the rest of the wiring were still found in the HDD.

Other wires were also damaged, making it clear that the previous owner had tried and failed to remove some connectors, including the front panel I/O wiring. Thankfully, this PC was first torn apart so that the damage could be repaired, but it shows just how easily a ‘quick power-on check’ can turn into something very unpleasant and smelly.

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Why Apple Dumped 2,700 Computers In A Landfill In 1989

July 21, 2025 by 55 Comments

In 1983, the Lisa was supposed to be a barnburner. Apple’s brand-new computer had a cutting edge GUI, a mouse, and power far beyond the 8-bit machines that came before. It looked like nothing else on the market, and had a price tag to match—retailing at $9,995, or the equivalent of over $30,000 today.

It held so much promise. And yet, come 1989, Apple was burying almost 3,000 examples in a landfill. What went wrong?

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Hackaday Links: July 13, 2025

July 13, 2025 by 8 Comments

There’s interesting news out of Wyoming, where a coal mine was opened this week. But the fact that it’s the first new coal mine in 50 years isn’t the big news — it’s the mine’s abundance of rare earth elements that’s grabbing the headlines. As we’ve pointed out before, rare earth elements aren’t actually all that rare, they’re just widely distributed through the Earth’s crust, making them difficult to recover. But there are places where the concentration of rare earth metals like neodymium, dysprosium, scandium, and terbium is slightly higher than normal, making recovery a little less of a challenge. The Brook Mine outside of Sheridan, Wyoming is one such place, at least according to a Preliminary Economic Assessment performed by Ramaco Resources, the mining company that’s developing the deposit.

The PEA states that up to 1,200 tons of rare earth oxides will be produced a year, mainly from the “carbonaceous claystones and shales located above and below the coal seams.” That sounds like good news to us for a couple of reasons. First, clays and shales are relatively soft rocks, making it less energy- and time-intensive to recover massive amounts of raw material than it would be for harder rock types. But the fact that the rare earth elements aren’t locked inside the coal is what’s really exciting. If the REEs were in the coal itself, that would present something similar to the “gasoline problem” we’ve discussed before. Crude oil is a mixture of different hydrocarbons, so if you need one fraction, like diesel, but not another, like gasoline, perhaps because you’ve switched to electric vehicles, tough luck — the refining process still produces as much gasoline as the crude contains. In this case, it seems like the coal trapped between the REE-bearing layers is the primary economic driver for the mine, but if in the future the coal isn’t needed, the REEs could perhaps be harvested and the coal simply left behind to be buried in the ground whence it came.

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