As anyone who has used a 3D printer before knows, what comes off the bed of your regular FSD printer is by no means a mirror finish. There are layers …read more (https://hackaday.com/2021/12/25/3d-prints-with-a-mirror-finish/)

Blender? No, Grinder
https://hackaday.com/2021/12/25/blender-no-grinder/

[Leandro Felipe] is no stranger to the dirty hack, and this video of his conversion of a blender into a handheld rotary grinding tool is no exception. (Embedded below.) But …read more (https://hackaday.com/2021/12/25/blender-no-grinder/)

Mini Linear Actuators From DVD Drive Parts
https://hackaday.com/2021/12/25/mini-linear-actuators-from-dvd-drive-parts/

For many years now a source for some of the smallest and cheapest home made CNC mechanisms has been the seemingly never-ending supply of surplus CD and DVD-ROM drives. The …read more (https://hackaday.com/2021/12/25/mini-linear-actuators-from-dvd-drive-parts/)

3D Printing Gets Tiny
https://hackaday.com/2021/12/25/3d-printing-gets-tiny/

Using a process akin to electroplating, researchers at the University of Oldenburg have 3D printed structures at the 25 nanometer scale. A human hair, of course, is thousands of time …read more (https://hackaday.com/2021/12/25/3d-printing-gets-tiny/)

Mico is a USB Microphone Based on a Pi Pico
https://hackaday.com/2021/12/25/mico-is-a-usb-microphone-based-on-a-pi-pico/

When [Mahesh Venkitachalam] was experimenting with machine learning for audio applications on a Raspberry Pi, he found himself looking for a simple USB microphone. A cheap one was easy to …read more (https://hackaday.com/2021/12/25/mico-is-a-usb-microphone-based-on-a-pi-pico/)

Cast Your Own Holiday Chocolate Bunny, or Rather Mouse
https://hackaday.com/2021/12/25/cast-your-own-holiday-chocolate-bunny-or-rather-mouse/

The art of forming and using a mold is, well, an art. The already tricky process would be made even harder by using a fickle material, like chocolate. This is …read more (https://hackaday.com/2021/12/25/cast-your-own-holiday-chocolate-bunny-or-rather-mouse/)

DIY High Flow 3D Printing
https://hackaday.com/2021/12/25/diy-high-flow-3d-printing/

Sometimes we’re impressed by the sheer audacity of a project. [Stefan] rarely disappoints in that area, and his latest video shows him making an adapter to convert a normal 3D …read more (https://hackaday.com/2021/12/25/diy-high-flow-3d-printing/)

Seoul Introduces Self-Driving Taxis
https://hackaday.com/2021/12/26/seoul-introduces-self-driving-taxis/

images from the Seoul city government website https://world.seoul.go.kr/commercialization-of-autonomous-vehicles-starting-in-sangam-dong-seoul/
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2021/12/taxi-feature.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2021/12/taxi-feature.png?w=800">Last year the Seoul city government passed an ordinance enabling the commercial operation of autonomous passenger-carrying vehicles. A six square kilometer region in the Seoul neighborhood of Sangam, near the …read more (https://hackaday.com/2021/12/26/seoul-introduces-self-driving-taxis/)