Sunday Funny: Hot-knife meets Rocket Sled

via GIPHY In a late-night Sunday Funny I have a merging of two previous viral demonstrations. The red-hot knife videos have engendered widespread replication, but there is still only one YouTuber with a rocket-knife testing track. We have already shared the Backyard Scientist’s video of his 150mph rocket-sled-knife. But now he is upping the ante. […]