Years ago, doing your own darkroom work was the only way to really control what your pictures looked like. In those days, coffee was what kept you going while you …read more (https://hackaday.com/2021/12/24/hacking-film-processing-with-coffee/)

Do You Need a Cycloidal Drive?
https://hackaday.com/2021/12/25/do-you-need-a-cycloidal-drive/

A cycloidal gear drive is one of the most mesmerizing reduction gears to watch when it is running, but it’s not all just eye-candy. Cycloidals give decent gearing, are relatively …read more (https://hackaday.com/2021/12/25/do-you-need-a-cycloidal-drive/)

3D Prints With A Mirror Finish
https://hackaday.com/2021/12/25/3d-prints-with-a-mirror-finish/

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/)