Cycloidal drives are a type of speed reducer that are significantly more compact than gearboxes, but they still come with a fair number of components. In comparison, the harmonic pin-ring …read more (https://hackaday.com/2026/03/11/3d-printing-a-harmonic-pin-ring-gearing-drive/)

Printing an Underwater Diving Helmet With Floating Air Supply
https://hackaday.com/2026/03/11/printing-an-underwater-diving-helmet-with-floating-air-supply/

Old-school diving helmets are deceivingly simple, even if they are – as [Hyperspace Pirate] puts it in a recent video – essentially the equivalent of an upside-down bucket with an …read more (https://hackaday.com/2026/03/11/printing-an-underwater-diving-helmet-with-floating-air-supply/)

Controlling Vintage Mac OS With AI
https://hackaday.com/2026/03/12/controlling-vintage-mac-os-with-ai/

Classic Mac OS was prized for its clean, accessible GUI when it first hit the scene in the 1980s. Back then, developers hadn’t even conceived of all the weird gewgaws …read more (https://hackaday.com/2026/03/12/controlling-vintage-mac-os-with-ai/)