If you have a well-equipped shop, it isn’t unusual to have a welder. Stick welders have become a commodity and even some that use shield gas are cheap if you …read more (https://hackaday.com/2024/04/15/plasma-cutter-on-the-cheap-reviewed/)

Compaq Portable III is More Than Meets the Eye
https://hackaday.com/2024/04/15/compaq-portable-iii-is-more-than-meets-the-eye/

The Compaq Portable III hails from the 386 era — in the days before the laptop form factor was what we know today. It’s got a bit of an odd …read more (https://hackaday.com/2024/04/15/compaq-portable-iii-is-more-than-meets-the-eye/)

Building a Tape Echo In A Coke Can Tape Player That Doesn’t Really Work
https://hackaday.com/2024/04/15/building-a-tape-echo-in-a-coke-can-tape-player-that-doesnt-really-work/

Back in the 1990s, you could get a tape player shaped like a can of Coca Cola. [Simon the Magpie] scored one of these decks and decided to turn it …read more (https://hackaday.com/2024/04/15/building-a-tape-echo-in-a-coke-can-tape-player-that-doesnt-really-work/)

Alternate Threaded Inserts for 3D Prints
https://hackaday.com/2024/04/15/alternate-threaded-inserts-for-3d-prints/

The usual way to put a durable threaded interface into a 3D print is to use a heat-set insert, but what about other options? [Thomas Sanladerer] evaluates a variety of …read more (https://hackaday.com/2024/04/15/alternate-threaded-inserts-for-3d-prints/)

Retrotechtacular: The Other Kind of Fallout Show
https://hackaday.com/2024/04/16/retrotechtacular-the-other-kind-of-fallout-show/

Thanks to the newly released Amazon Prime series, not to mention nearly 30 years as a wildly successful gaming franchise, Fallout is very much in the zeitgeist these days. But …read more (https://hackaday.com/2024/04/16/retrotechtacular-the-other-kind-of-fallout-show/)

Why Pulse Current Charging Lithium-Ion Batteries Extends Their Useful Lifespan
https://hackaday.com/2024/04/16/why-pulse-current-charging-lithium-ion-batteries-extends-their-useful-lifespan/

Mechanisms of pulse current charging for stabilizing the cycling performance of commercial NMC/graphite LIBs. (Credit: Jia Guo et al., 2024)
" data-medium-file="https://hackaday.com/wp-content/uploads/2024/04/aenm202400190-fig-0008-m.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2024/04/aenm202400190-fig-0008-m.jpg?w=800">For as much capacity lithium-ion batteries have, their useful lifespan is generally measured in the hundreds of cycles. This degradation is caused by the electrodes themselves degrading, including the graphite …read more (https://hackaday.com/2024/04/16/why-pulse-current-charging-lithium-ion-batteries-extends-their-useful-lifespan/)

Linux Fu: Stupid Systemd Tricks
https://hackaday.com/2024/04/16/linux-fu-stupid-systemd-tricks/

Last time, I gave a whirlwind introduction to a very small slice of systemd. If you aren’t comfortable with systemd services, timers, and mounts, you might want to read that …read more (https://hackaday.com/2024/04/16/linux-fu-stupid-systemd-tricks/)

Fail of the Week: Can an Ultrasonic Cleaner Remove Bubbles From Resin?
https://hackaday.com/2024/04/16/fail-of-the-week-can-an-ultrasonic-cleaner-remove-bubbles-from-resin/