@matty ALRIGHT. I wanted to mention two things: videos and .step/.stp files.

First up: .step/.stp files. It's a popular format for sharing 3d models, especially if you're into 3d printing stuff. The problem is that when you export a .step from a cad program they frequently add information that could identify you, such as timezone, username you are currently logged in with and the complete file path the file was originally exported to.

This is visible when you open the .step/.stp with a text editor such as notepad or notepad++. The good news is you can simply remove this information and resave the file. I've included a screenshot from my own machine of what this looks like.

I personally know of two people in the 3d printed weapon community who were doxed because of this.