Mr Carlson's Lab is also excellent, restoring old radio equipment in excruciating detail. A lot of the videos are over two hours long, but it makes excellent ba

Mr Carlson's Lab is also excellent, restoring old radio equipment in excruciating detail. A lot of the videos are over two hours long, but it makes excellent background viewing. Also it's always mentioned, but CuriousMarc and Ken Sherriff have some amazing restoration videos. In particular the excellent series on restoring the apollo guidance computer.