The 80/20 rule is a piece of incel theory that is continually referenced in Adolescence, and it can be a little tricky to understand — because it is mostly made up. The 80/20 rule is based on ...

You can buy threaded inserts (see video below) but that means some other piece of hardware to have to stock in your shop. [PeterM13] had a different idea: Cut a piece of threaded stock ...