Robert Murray-Smith [145K subscribers]
 

https://www.youtube.com/c/RobertMurraySmith/playlists

Pretty amazing. He shows proof-of-concept on a wide variety of subjects. Firing supercapacitor plates made of clay and graphite in a homemade kiln. Making graphene sheets a foot square, with homebrewed graphene.


Just to pick one — Making a wind mill out of a ceiling fan:
https://www.youtube.com/watch?v=wlMlEkR704U

A flat list here: https://www.youtube.com/c/RobertMurraySmith/videos

I've been watching these videos for the last month or so after one turned up in my You tube recommended list.
I really like his presentation style and varied subject matters. :)