Broaching is a machining process that uses a toothed tool (broach) to remove material. It goes back to early 1850s with first applications being cutting keyways in pulleys, gears, and rifling gun barrels.
/r/Dildont: Dildont - Things that could be used as dildos, but really, really shouldn't. - November 1, 2022 - 04:15
/r/mechanical_gifs: 100% Non-Organic .gifs - This sub is for .gif/.gifv/silent .mp4 images that contain a subject matter of mechanical origin. - November 1, 2022 - 03:12
/r/educationalgifs: For .gifs that provide knowledge! - Gifs are great at getting quick to digest info, and /r/educationalgifs strives to give you educational info in this quick to digest format. From chemical processes, to how plants work, to how machines work, /r/educationalgifs will explain many processes in the quick to see format of gifs. - October 31, 2022 - 20:22
I don’t even know what to say, just look at it
/r/OddlyArousing: Oddly Arousing Stuff - Does it have luscious curves? Does it jiggle or move smoothly? Does it look like it might be bursting with pleasure? Does it give you that familiar tingling sensation of arousal, even though it isn't inherently sexual? Then this is where it belongs! - October 31, 2022 - 23:43