3D Printed Scooter Fits In Your Luggage, Some Assembly Required

July 10, 2026 by Tyler August 17 Comments

Though [Ivan Miranda] calls the 3D printed vehicle in his recent video a motorbike, what he ultimately pulls out of his suitcase is clearly a scooter. Linguistic confusion aside, the “Mirandetta” looks like an awesome build and pulling a scooter out of your suitcase and whizzing past everyone in the taxi line just sounds amazing, especially knowing you made it yourself.

Aside from a whole lot of filament, he’s got a couple of tool batteries for hot-swappable energy that Airport security shouldn’t mind too much — provided you carry them with you, anyway — plus the usual e-bike motor and electronic speed control you might expect, and lawnmower tires which you might not. The narrow 3D printed rims round over the normally-flat tires to make them usable for this application. He seems particularly taken with the bi-stable mechanism he built for the kickstand, and we can’t blame him as we love seeing that kind of thing ourselves. The TPU seat is also a nice touch to keep with ‘everything printed’ vibe.

Now while the finished product does indeed fit into his suitcase, it needs to be completely disassembled. Well, unless you have an over-sized suitcase, perhaps. So our dreams of zooming away from the luggage line from the first paragraph were perhaps a bit premature. Still, from the footage at Prague Maker Faire at the end of the video, it looks like it was a fun enough ride that we can forgive [Ivan] for our overactive imaginations.

If you want an open-source e-bike, we’ve seen those too — but that won’t fit in any kind of suitcase.

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A black plastic cube is shown in front of another, larger rectangular black plastic box. The plastic cube has a silver microscope objective protruding from one side, with green light being emitted from it into a small plastic tube held on a positioning stage.

2026 Frikkin Lasers Challenge: A 3D-Printed Raman Spectrometer

July 5, 2026 by Aaron Beckendorf 19 Comments

When light reflects off a surface, not all of it reflects off at the same wavelength; some photons impart a portion of their energy to raising the vibrational energy of the surface’s molecules, and are thus scattered away at a lower energy and longer wavelength. This is called Raman scattering, and the precise wavelength shifts are characteristic of the particular molecule being illuminated. It can therefore be used in Raman spectroscopy to identify molecules; these spectrometers are normally elaborate, expensive instruments, but [Allegedly Science] was able to build a simple system with surprising sensitivity.

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Make A DIY E-ink Faceplate For Valve’s Steam Machine

July 4, 2026 by Donald Papp 15 Comments

Valve has always designed hacker-friendly hardware, and in that spirit, [NaKyle Wright] released Inkterface, a design for an E-ink faceplate to fit the recently released Steam Machine. As far as projects go, this one is meticulously documented, so give it a peek.

The system uses a selection of components that include a 5.83″ E-ink panel and driver board, a small lithium-polymer battery, and an ESP32-based controller board. A cleverly-designed 3D printed frame and bezel hold everything just so, creating a snug assembly with minimal wiring hassles.

A small service can be easily configured to control how the display updates.

The faceplate is wireless and self-contained, attaching with the help of four magnets. On the software side, the host machine communicates over Bluetooth, and a service takes care of pushing updates. An app for configuring and talking to the display will be available on Steam eventually, but in the meantime one can install that part manually.

[NaKyle]’s bill of materials calls for specific components, but the underlying design is very modular. Should one wish to make hardware or component changes, alterations to the 3D printed parts might be needed as well. Fortunately, [NaKyle] includes the .step files alongside the .stl models. We love to see that, because it makes tweaking or customizing so much more accessible. A homebrewed version of this E-ink panel might be just the thing to complement a homebrewed Steam machine.

Be sure to also check out the repository of Steam hardware, which contains drawings and 3D models of the Steam Deck and Steam Controller, useful for designing holders or custom brackets or whatever else one may need.

Piano Escapement Migrates To Drum Kit

June 29, 2026 by Bryan Cockfield 6 Comments

For as popular as the piano is in music studios, homes, and schools, it almost defies logic. Compared to a guitar, harmonica, or drum set, pianos are incredibly complex machines that can have somewhere on the order of 8,000 moving parts in a case that can easily weigh hundreds of pounds and which often responds quite poorly to seasonal changes in temperature and humidity. But for putting up with all of these downsides, musicians are rewarded with an instrument that uniquely responds to touch, style, and emotion. A big reason for that is that mechanical complexity, and [Super Valid Designs] is attempting to bring that design to a drum set.

Compared to the complex machinery that connects the movement of a piano’s key to its hammer striking a string, a kick drum pedal is much simpler. It can only bounce off of the drum or get “buried” where the beater remains pressed up against the drum after hitting it. [Super Valid Designs] wanted something with a bit more finesse and control, so he first 3D printed a mechanism that throws the beater towards the drum head and then disconnects it mechanically from the pedal, so that it rebounds even if the pedal stays depressed. The next steps were more difficult, which involved making sure the mechanism reset itself in a repeatable way, without making too much noise of its own. This involved trying out a few different ideas and printing a massive amount of subtly different linkages, but in the end he’s left with a machine that nearly replicates all of the parts of a piano’s escapement,

The end goal of this project wasn’t simply to reproduce piano mechanisms on a drum set, though. [Super Valid Designs] hopes to make a kick drum that’s much smaller than those found in traditional kits, and since smaller drums respond poorly when the beater remains on or near the drum after striking it, a mechanism like this will dramatically improve the performance of the smaller drum and help reduce the requirement for perfect technique. And, maybe in 50 years or so, these types of escapements will take over the drumming world just like the piano escapement took over keyboards after its invention in the 1700s. Some simpler piano actions have been built before, but the complexity seems to be a requirement for all of the tasks they need to do whether its for a piano or a drum.

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Ergonomic Mouse Gives Each Fingertip Its Own Saddle

June 15, 2026 by Donald Papp 5 Comments

Want to make your own ergonomic mouse but don’t know where to start? Why not try [psudoku]’s Kotinos design?

It’s a scaffold-like fingertip shell that uses the internals of an HSK Pro mouse. Each fingertip gets its own little saddle-shaped nook, and things like hand size and paddle surface can all be configured by modifying the OpenSCAD scripts.

[psudoku]’s unit looks to us as though it was maybe made using multi-jet fusion (MJF) 3D printing, but it should be perfectly printable on hobbyist printers, whether resin- or filament-based.

Comfort of the contact surfaces is left up to the end user, but if your print lacks smoothness and sanding isn’t your jam, you might consider a layer of fabric tape to create a velvet-like surface on a 3D print. That’s a trick we’ve kept in mind ever since seeing it put to good use, cushioning the hardware in a DIY steam deck case.

Is the minimalist scaffold approach to a mouse not your style, or does your hand crave something less lightweight but a little more personalized? You might want to craft a truly custom-fitted mouse, for which clay is the way.

Downloadable Xbox Thumbstick Toppers Give Gamers Accessibility Options

June 15, 2026 by Donald Papp No comments

Microsoft has a history of taking accessibility options seriously for gaming controllers, and that trend continues with downloadable thumbstick toppers for Xbox controllers. Being straight from the source, the 3D models should fit as well as can be expected with a minimum of fiddling. Just make sure you select the right controller model, because they are each subtly different.

The toppers themselves come in different styles, and there’s a design to fit a variety of needs, from a thumb cradle to ones intended for more serious adaptations — the perforated X-shaped topper, for instance, is meant to anchor a custom shape molded overtop it.

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Adding Weight To A 3D Print With Plaster Of Paris, Cleanly

June 12, 2026 by Donald Papp 15 Comments

Sometimes it’s useful to add extra mass to a 3D print, and [Joe Fedewa] shared a simple and effective technique that uses plaster of Paris. Rather than pause the print and insert hardware or weighted bits inside, he designed the base as hollow. Not in the sense of zero infill, but in the sense of modeling a cavity into the open bottom of the object.

An open cavity in the base is perfect for filling with plaster of Paris.

After the print is complete, he mixes the dry plaster with water until it creates a thick but pourable mixture. Then the object gets turned upside-down and the cavity filled. In about an hour, it will have set up enough to be handled and worked.

Plaster of Paris has a good heft to it, but more importantly it can be made perfectly presentable thanks to being very friendly to post-processing. Any rough spots can be easily sanded and the whole bottom smoothed, so one doesn’t even need to cap it off. Completely cured plaster can be sealed with a clear coat for a more durable finish, if desired.

This basic concept has been used in other ways, such as reinforcing prints with concrete to yield parts solid enough to make tools out of. But using plaster of Paris not just to add mass, but specifically to create a presentable surface that doesn’t need covering up is a neat and highly economical adaptation of the idea.

Other methods of adding mass to a 3D print include inserting metal balls or chunky nuts, bolts, or other hardware, but this method doesn’t require pausing prints to insert things. Nor does it require sealing off or capping the print, messing with goopy epoxies or resins, or spending a lot of money — making it a good one to keep in mind in case it comes in handy someday.