refurbished baby blue vice next to its refurbisher

Vice Of Old Brought To The Modern Age

People say they don’t make em’ like they used to, and while this isn’t always the case, it’s certainly true that old vices rarely die with time. This doesn’t mean they can’t use a refresh. [Marius Hornberger] recently backed that up when he decided to restore an old vice that had seen better days.

custom bearing and rod
Customized axial bearing assembly

When refreshing old tools, you’ll almost always start the same: cleaning up all the layers of grease and ruined paint. The stories that each layer could tell will never be known, but new ones will be made with the care put into it by [Marius]. Bearings for the tightening mechanism had become worn down past saving, requiring new replacements. However, simply swapping them with carbon copies would be no fun.

[Marius] decided to completely rethink the clamping mechanism, allowing for much smoother use. To do this was simple, just machine down new axial bearings, design and print a bearing cage, machine the main rod itself, and finally make a casing. It’s simple really, but he wasn’t done and decided to create a custom torque rod to hammer in his vicing abilities. Importantly, the final finish was done by spraying paint and applying new grease.

Old tools can often be given new life, and we are far from strangers to this concept at Hackaday. Make sure to check out some antique rotary tools from companies before Dremel!

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A red and blue visualization of the waves from a small ultrasonic speaker

Seeing Sound For Under $200

There are five general senses: touch for feels, taste for food, smell for avoiding trash, hearing for sounds, and, of course, eyesight for visualizing the very waves making up that sound. [PlasmatronX] drives that last point home with his camera for sound waves, that’s even able to capture constructive and destructive interference. (Video, embedded below.)

You may have heard of Schlieren imaging, which is usually used to capture the movement of air currents caused by heat sources. [PlasmatronX] sets up a concave mirror to amplify the refraction of different densities of air, only unlike traditional Schlieren setups, he’s after the different densities of air caused by the pressure waves that we interpret as sound.

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a torn-up printer with a very long image of different frames

Playing DOOM On A Receipt Printer

Gaming is a wonderful thing. Unfortunately for many of us, work takes up our valuable time, which should be allocated to our gaming. What if there was a better way? Well, printers can print an image quickly, and receipt printers can print a lot of images. This sounds like an effective display for DOOM in a pinch. [Bringus Studios] managed to find such a printer and got the classic shooter running.

Getting the printer’s attached computer, which was only designed for printing the cost of your chicken sandwich, to run Half-Life was far from easy. [Bringus] struggled through the process of swapping operating systems from Windows 7 to Linux just to return to Windows 7 after a painful process of maintaining compatibility between 32 and 64 bit software. Driver issues followed through the entire process just to get anything running at all.

But we can’t play DOOM while at work on a normal screen. The printer MUST display our glorious 480p gameplay. To achieve such a workflow, [Bringus] implemented a script to print out a frame of the display, allowing for “visible gameplay”. Along with some heat issues from the nature of thermal receipts, eventually the printer displayed the glory of DOOM.

Playing games on a thermal printer might be one of the weirdest things you’ve seen today, but what if we could reverse the script a bit and create a printer from something else? Here at Hackaday, we have exactly the thing for you: a printer made from a vintage typewriter!

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3D printed Origami mechanism

Origami On Another Level With 3D Printing

Origami has become known as a miracle technique for designers. Elegant compliant mechanisms can leverage the material properties of a single geometry in ways that are sometimes stronger than those of more complicated designs. However, we don’t generally see origami used directly in 3D printed parts. [matthew lim] decided to explore this uncharted realm with various clever designs. You can check out the video below.

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rat playing doom

Rats Get Even Better At Playing DOOM

We all know that you can play DOOM on nearly anything, but what about the lesser known work being done to let other species get in on the action? For ages now, our rodent friends haven’t been able to play the 1993 masterpiece, but [Viktor Tóth] and colleagues have been working hard to fix this unfortunate oversight.

If you’ve got the feeling this isn’t the first time you’ve read about rats attempting to slay demons, it’s probably because [Victor] has been working on this mission for years now — with a previous attempt succeeding in allowing rats to navigate the DOOM landscape. Getting the rodents to actually play through the game properly has proved slightly more difficult, however.

Diagram of screen in front of rat playing doom

Improving on the previous attempt, V2 has the capability to allow rats to traverse through levels, be immersed in the virtual world with a panoramic screen, and take out enemies. Rewards are given to successful behaviors in the form of sugar water through a solenoid powered dispenser.

While this current system looks promising, the rats haven’t gotten too far though the game due to time constraints. But they’ve managed to travel through the levels and shoot, which is still pretty impressive for rodents.

DOOM has been an indicator of just how far we can take technology for decades. While this particular project has taken the meme into a slightly different direction, there are always surprises. You can even play DOOM in KiCad when you’re tired of using it to design PCBs.

A picture of a life sized magikarp from pokemon

Magic Magikarp Makes Moves

One of the most influential inventions of the 20th century was Big Mouth Billy Bass. A celebrity bigger than the biggest politicians or richest movie stars, there’s almost nothing that could beat Billy. That is, until [Kiara] from Kiara’s Workshop built a Magikarp version of Big Mouth Billy Bass.

Sizing in at over 2 entire feet, the orange k-carp is able to dance, it is able to sing, and it is able to stun the crowd. Magikarp functions the same way as its predecessor; a small button underneath allows the show to commence. Of course, this did not come without its challenges.

Starting the project was easy, just a model found online and some Blender fun to create a basic mold. Dissecting Big Mouth Billy Bass gave direct inspiration for how to construct the new idol in terms of servos and joints. Programming wasn’t even all that much with the use of Bottango for animations. Filling the mold with the silicone filling proved to be a bit more of a challenge.

After multiple attempts with some minor variations in procedure, [Kirara] got the fish star’s skin just right. All it took was a paint job and some foam filling to get the final touches. While this wasn’t the most mechanically challenging animatronic project, we have seen our fair share of more advanced mechanics. For example, check out this animatronic that sees through its own eyes!

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bikes are shown raised from the floor from the garage opener lift

Raise Bikes To The Heavens With Humble Garage Door Opener

Biking can be an incredibly rewarding hobby, but what do you do with all of your expensive pieces of metal and composite when you aren’t hitting the trails? They take up space that you could use for more bikes! [Chaz] figured there had to be a better way and discovered the unlikely solution of the humble garage opener.

Garage doors are made to lift high with moderate weight, exactly what one would expect from a bike lift. If you have high ceilings in your garage or wherever else you store your bikes there can’t be much easier than pushing a button to get your bike out of the way.

To assemble the unusual bike rack, [Chaz] mounted the motor to the wall with a few scraps of wood, and built a wooden platform that rides along the rail. This additional board allows you to use a traditional bike wheel rack to gently raise the bike. While initially [Chaz] had some questionable results, this was quickly resolved with removing the rotational elements of the mount and allowing a slight slant in the bike.

While not everyone may need to raise their bikes to the heavens, this type of simple hacking is always rewarding to see come together. If you want to see how some more bike specific tech works, check out the insides of this expensive bike seat!

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