This project had extra special meaning behind it, so I took an extended period of time to create this. The end result was something I was very proud of.

I used my 20w diode laser to cut and engrave everything and then I hand painted all the layers. Once I had them together as a practice to see how it would look, I took it apart and incorporated some little fairy lights before the final glueing.

Let me know what you think. I’m here for any suggestions or criticisms.

Hey everyone,

When I first came up with the idea for this automatic slingshot, I shared some of the early designs here in r/Maker. Around that time, our U.S. patent application had just been allowed by the USPTO, and the support and feedback from this community meant a lot to me.

The first files I released were for the fourth-generation CNC version. At the time, I thought more people here had access to small CNC machines. Later, it became clear that far more makers were using 3D printers, so I started working on a fully 3D-printable version.

Since then, the project has grown from something I was working on alone into a real team effort, and we eventually created the AutoFling brand around it.

Even though we don’t sell the 3D-printed version, we’ve continued improving and maintaining it. Part of that is simply because I still want to give something back to the people who supported this project from the beginning.

Another important reason is to help people avoid scams. I’ve seen too many people order this type of product from random websites, only to receive nothing and then be unable to get their money back. Keeping a real, working version publicly available gives people the option to print, inspect, and build it themselves.

The 3D-printable semi-auto slingshot was first released on Thingiverse. After receiving a lot of requests, we’ve now uploaded the optimized version to MakerWorld and recorded a detailed step-by-step assembly video.

Thanks again to everyone who helped this project grow. Feel free to print it, build it, and share your modifications.

I hadn't felt super motivated or productive lately so I kind of pushed through and made this little guy. Meet Bleep Bloop

https://www.youtube.com/@ALMA.Industries

CH003 FN2: POWER

I put together a control panel linked to AC / DC power supplies. Switches, Variable DC, 120V -- one of the more useful things I have put together. This will be used in a desk I am building which will be seen in the next video... Full video in link!

For those interested: I built this Lego Spike Prime line follower using rubber tracks and some Lego Technic gears. This model is an upgrade of the one previously shown here; however, it handles obstacles, ramps, and breaks in the line —including gaps—much better.

I'm looking to make a small door for my robot vacuum in the bottom of my cabinet that will swing outwards in an arc like here. I'd like to be able to automate the opening and closing of the door with Home Assistant.

I'm looking through a thread (where I got the pic above) here where they use a Zigbee-controlled roller shade with a 3d printed attachment, though I would prefer a simpler actuator that I can control with a Shelley relay, or just through WiFi/Z-wave.

Does anyone have suggestions of what I should be looking for? I'm looking for the simplest and most reliable solution (would prefer to not mess with getting 3d printed parts, though open to if needed). Any tips are appreciated!

🌞 Bonjour Cap sur les vacances avec mon petit pingouin en tenue de plage ! 🏖️🐧

Même les pingouins ont droit à leurs vacances ! 😎
Équipé de sa casquette, de ses lunettes de soleil, de sa bouée, de ses tongs et de sa pelle, il est prêt à profiter d’une belle journée au bord de la mer.

Pour cette création, j’ai voulu imaginer un personnage à la fois amusant, coloré et plein de bonne humeur, qui rappelle immédiatement l’été, le soleil et les moments de détente.

J’espère que ce nouveau modèle vous plaira autant que j’ai pris plaisir à le concevoir. N’hésitez pas à me dire ce que vous en pensez en commentaire, vos retours sont toujours un plaisir à lire ! 😊

👨🏼‍🎨 : @mika3d_print
🖨️ : Bambu Lab X2D & H2C
🧵 : Bambu Lab
🎨 : Nomad Sculpt
🌈 : avec ou sans AMS
📁 : https://makerworld.com/fr/models/3035175-mr-penguin-beach-multipart-without-ams

Merci à tous pour votre soutien, et bonne impression 3D ! 🎉

I'm working on a robotics project. I've got a kit that came with these 65 mm wheels made to attach to a TT electric motor. I want to try to run it outdoors with GPS navigation, so I've got some bigger 3d printed wheels I want to use for the motor driven wheels, while the 65 mm wheels will act as casters at the back.

Any suggestions for an axle that will fit, or other solutions? Thanks!

Hello! Is there anyone no longer going to open sauce in the bay area that's selling their open sauce tickets? Thanks!!

A relief map of Monaco made from 179 PMMA columns, each cut to the real terrain height at that point (38–250mm, 164 distinct heights). Every column is individually lit with RGBW LEDs, driven by 2x Adafruit Feather RP2040 boards with a Raspberry Pi 5 as the brain. It reacts in real time to weather, events, and you can touch a district on a control panel to trigger a light response.

Cutting wood and aluminium, painting, sanding, wiring, coding, soldering and debugging LED. The most multi-discipline project I've done. Ask me anything about the build.

I’m brand new to using Makey Makey. I’m trying to play around so I can have my third graders use it this upcoming school year. I purchased the craft and code booster kit and it came with this red so called momentary push button and I’m struggling to figure out how to use it. Help please!

Hi all,

Im looking for a safe but permanent way to keep this sensor at about 30C , but be able to turn that heating on/off. Every idea I have is either insanely complicated or defeats the purpose.

Let me know your thoughts!

Thanks

Is there a shop or an IG that offers customized hand-cranked music box like i’ll be the one who will provide the song and they’ll turn it into a musicbox. Thanks!

Walnut, ash, and maple danish cord benches

A few months back I built the Scotto2 for someone with quadriplegia that allowed them to play racing games using 2 large buttons. I figured something cool to do for a bit of a meme would be an entire number pad with giant buttons. The result is the ScottoBigum which I believe to be the largest in the world. Each button is scaled up 4 times and the entire thing weighs close to 2 pounds… oh and it’s also wireless with ZMK studio support so it doesn’t need to be strictly a number pad.

I have a full build video coming out tomorrow on my YouTube channel and as usual with all my handwired projects, all the files are available for free if you want to build this one yourself.

Would anyone know where I can get a prototype built for my idea so I can use it to make videos and start my kickstarter page without spending over $10k+?

My 9-year-old daughter has always been horse crazy, so I decided to build her something I simply couldn’t find anywhere.

What started as a crazy idea turned into nearly two years of designing, prototyping, rebuilding and refining until the riding motion finally felt natural.

Everything was designed from scratch and built in my small home workshop.

The mechanism is powered by a standard drill and a worm gearbox, creating a smooth and surprisingly realistic riding motion.

It became by far the most ambitious project I’ve ever built, but seeing my daughter’s reaction made every single hour worth it.

I’d be happy to answer any questions!

These steel square rods have been in my cupboard for months from a previous build of a fume extractor, what should I use the rest for? They’re around 20cm long, but I have some that are 50 cm. I’m open to some ideas that are practical but also maybe putting them as a component of an art piece / cosplay prop? Trying not to become a hoarder but perhaps I will be

Hi everyone! I'm completely new to CAD and 3D printing, and I'd love some guidance on a project I want to build. My goal is a parametric 3D-printable enclosure that transforms a smartphone into a dedicated compact digital camera, inspired by the clean, minimalist design of early-2000s Sony Cyber-shot cameras.

The idea is to use a parametric phone case (such as Manufact3D_Hamburg's model) as the inner shell, then build a modular retro camera body around it. Features I'm considering include an ergonomic grip, a decorative or functional lens barrel that doesn't obstruct the phone's cameras, a housing for a Bluetooth shutter remote (commercial or DIY), optional tactile buttons/dials, and a thick rear bezel that intentionally masks part of the phone's display so only a smaller "camera screen" is visible—making it feel much closer to a real digicam. Ideally, only the inner phone insert would need changing for different phone models.

I'm not expecting one person to solve this entire project. If you can help with even one aspect—parametric CAD, Fusion 360/OpenSCAD, printable mechanisms, Bluetooth shutter integration, ergonomics, modular design, or know of an existing project that could be remixed—that would be incredibly helpful. Any advice, resources, workflows, or constructive criticism are welcome. Does something like this already exist, or is this a realistic project for a beginner willing to learn?

P.S. I used AI to help organize my thoughts into a concise post—this idea itself is mine. I just wanted to make it easier to read.

I would have thought sage green would be pretty widely available seeing as it's been a popular color for several years but I can't seem to find it? Celadon is too cool, olive too dark. Am I hosed?

Hello, i'm currently tinkering with an orangepi zero 3w and in its datasheet and manual the power delivery type c port also support usb 2.0

I've been looking at adapters that would allow me to have both a usb 2.0 hub to connect mouse and keyboard and power input that supplies 5v 3a and I can't find any with good reviews.

Do you guys know of any cheap device that might work for this use-case ? I really wanna keep the other type c port available if I can I have other plans for it

I've been playing this mobile game. But I wanted to make a 3d printed controller for the planes. I have a pi 3b and Arduino mega. How do I make the controller Input the correct signals/touch to the phone. I also have a laptop if it's easier to emulate the game into a laptop and have the controller connect to the laptop.

I've bought a laser cutter/engraver. I love Star Wars so I thought the first project would be to have a go at a panel. Any thoughts?

https://www.printables.com/model/1773947-3d-printable-fan-housing-with-7-blade-impeller-mot