I know this is not a CNC router, but I figured this would likely be the best location for this post.
I have followed the work of Werner Berry for years. Early on when I started designing 3D printers Werner put out amazing videos on his BerryBot3D Delta printer.
Well now Werner has built himself a Wire EDM machine. He had some earlier videos of the construction, but he just released a detailed walkthrough. For some reason the YouTube Algorithm always seems slow to promote Werners videos. He tends towards long format detailed videos.
Anyway Figured the crowd here would find it interesting. I also recommend his back catalog of videos. He is wickedly intelligent and an incredible craftsman.