I recently got into CNC machining, so tried searching twitter to find some accounts to follow. boy was i surprised by that #cnc hashtag.

Searching for coverage by the British Broadcasting Company on Twitter is kind of a pain.

I just tried search for #cnc and mostly got machining content, with bits of non-English stuff I don't understand but looked innocent enough. What sort of content did you see?

Presumably this: https://www.urbandictionary.com/define.php?term=CNC

They probably applied an NSFW filter since :)