For those who don't know, Ben's Youtube channel is "Applied Science"[1]. All the described devices have videos on their design/construction/use. [1] https://ww

For those who don't know, Ben's Youtube channel is "Applied Science"[1]. All the described devices have videos on their design/construction/use. [1] https://www.youtube.com/user/bkraz333 https://www.youtube.com/user/bkraz333