https://www.youtube.com/channel/UCFtc3XdXgLFwhlDajMGK69w
LaserSaber:
https://www.youtube.com/channel/UCIKzUKkh7XtnSYPW0AJb-9w
or StyroPyro:
https://www.youtube.com/channel/UCJYJgj7rzsn0vdR7fkgjuIA
They have similarity to the Quint BUILDs channel that the knife throwing machine video came from. They all do some pretty crazy builds.