[DaveMakesStuff] uses 3D printed test tubes for plants and similar purposes, and he’s shared how to make them on a 3D printer, complete with different models each optimized for different nozzle sizes.

Have you ever been tempted by those metal 3D printing services? [Carter Hurd] has, and puts them to the test with a wristwatch. (Video, embedded below.) It’s fair to say that among Hackaday readers ...

In a major step toward its upcoming orbital mission, Indian space startup Agnikul Cosmos has successfully conducted a simultaneous test firing of two electric pump-fed semi-cryogenic rocket engines, ...

Steel is one of the most essential components for the nuclear energy industry, among others. In nuclear reactors, steel is used to fortify walls and for crucial components. The steel in nuclear ...