/r/Roukurai: Roukurai - This is my reddit now. - March 1, 2020 - 08:33
/r/Damnthatsinteresting: Damn, that's interesting! - The most interesting place on reddit - February 29, 2020 - 11:18
/r/ehlersdanlos: Ehlers Danlos Syndrome - March 1, 2020 - 03:08
/r/interestingasfuck: Interesting As Fuck - For anything that is InterestingAsFuck - February 29, 2020 - 21:09
/r/EngineeringPorn: Engineering Porn - February 29, 2020 - 11:30
/r/mechanical_gifs: 100% Non-Organic .gifs - This sub is for .gif/.gifv/silent .mp4 images that contain a subject matter of mechanical origin. - February 29, 2020 - 11:30
/r/3Dprinting: 3D printing news - /r/3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing. - February 29, 2020 - 14:51