Printing In Multi-material? Use These Filament Combos

If one has a multi-material printer there are more options than simply printing in different colors of the same filament. [Thomas Sanladerer] explores combinations of different filaments in a fanta…

Putting The New CryoGrip Build Plate To The Test

Bambu Lab has released a new line of low-temperature build plates that look to be the next step in 3D printing’s iteration—or so YouTuber Printing Perspective thinks after reviewing one. The …

3D Printed Tires, By The Numbers

What does it take to make decent tires for your projects? According to this 3D printed tire torture test, it’s actually pretty easy — it’s more a question of how well they work wh…

New Study Looks At The Potential Carcinogenicity Of 3D Printing

We’ve all heard stories of the dangers of 3D printing, with fires from runaway hot ends or dodgy heated build plates being the main hazards. But what about the particulates? Can they actually…

The Strangest Way To Stick PLA To Glass? With A Laser And A Bit Of Foil

Ever needed a strong yet adhesive-free way to really stick PLA to glass? Neither have we, but nevertheless there’s a way to use aluminum foil and an IR fiber laser to get a solid bond with a …

Spin Your Own Passive Cooling Fibres

When the temperature climbs, it’s an eternal problem: how to stay cool. An exciting field of materials science lies in radiative cooling materials, things which reflect so much incoming heat …

3D Printing In Custom PLA With A TPU Core

[Stefan] from CNC Kitchen explored an unusual approach to a multi-material print by making custom PLA filament with a TPU core to make it super-tough. TPU is a flexible filament whereas PLA is hard…

Common Enzyme Breaks Down PLA Fast

The global issue of plastic waste has prompted scientists to seek innovative solutions for recycling. Single-use plastics, notorious for their environmental impact, require new methods for efficien…

Lessons Learned From A High-Voltage Power Supply

When you set out to build a 60,000-volt power supply and find out that it “only” delivers a measly 50,000 volts, you naturally have to dive in and see where things can be improved. And …

Israel will hit Hamas all over Gaza – including ‘in the south’, IDF says

Israeli troops will hit Hamas targets wherever they can find them, including in the southern part of the Gaza Strip, Israel's chief military spokesman said on Friday, as forces continued their ground…

Lessons In Printer Poop Recycling

The fundamental problem with multi-color 3D printing using a single hotend is that they poop an awful lot. Every time they change filaments, they’ve got to purge the single nozzle, which resu…

Using 5V Programmable Logic Here In The 2020s

Do you speak GAL? [Peterzieba] does, and has pulled together a collection of documents and tools so that you can too. There’s a dividing line in electronic engineering education, between thos…

Repairing A Home Injection Molding Machine

When [Michael] over at the Teaching Tech YouTube channel bought a hobby injection molding machine a long time ago, one of the plans he had with it was to use it for grinding up waste bits of PLA fi…

Arctos Robotics: Build A Robot Arm Out Of 3D Printer Spares?

ARCTOS is a 6-DOF robot arm based upon 3D printed mechanics running a modified version of GRBL firmware. Let’s get this straight now, the firmware is open source, but the hardware plans are a…

DIY Self-Assembling 4D Printing

A 4D printed object is like a 3D printed object, but it changes shape or self-assembles when its environment changes. [Teaching Tech] has been reading about this technology and decided to try to re…

3D Printed Strain-Wave Gearbox Turns Up The Torque

3D printers are good for a lot of things, but making parts for power transmission doesn’t seem to be one of them. Oh sure, some light-duty gears and timing belt sprockets will work just fine …

Hackaday Links: April 3, 2022

It’s that time of year again — the 2022 Hackaday Prize has officially launched, and we’re excited to see what it turns out. This year’s theme is “Sustainability, Resil…