https://www.youtube.com/@SuperfastMatt
Car stuff. He installed a Tesla battery and motor into a 1950s Jaguar, and is working on a small engine land-speed record race car. Also, he’s hilarious.
https://www.youtube.com/InheritanceMachining
He has a magnificent machine shop and uses it to mostly to make gorgeous machined tools to add to expand the shop.
https://www.youtube.com/c/CuttingEdgeEngineeringAustralia
An Australian guy who runs a one-man shop that fabricates and repairs parts for heavy equipment like mining trucks and excavators.
https://www.youtube.com/stevemould
Fun, quirky science stuff.
https://www.youtube.com/@AppliedScience
He does super impressive science projects.
https://www.youtube.com/c/BreakingTaps
Super impressive amateur science and machining projects.
https://www.youtube.com/bpsspace
Very talented rocketry hobbyist. Working on things like “model rocket that lands upright like a SpaceX Falcon 9”.
https://www.youtube.com/@PracticalEngineeringChannel
Lay-level explanations of civil engineering topics.
https://www.youtube.com/@smartereveryday
Supersonic baseball cannon, etc.
https://www.youtube.com/c/szyzyg
Very good lay-level videos about current events in rocketry and space.
https://www.youtube.com/c/StuffMadeHere
Self aiming pool cue, unmissable basketball hoop, gunpowder powered baseball bat, etc.
https://www.youtube.com/channel/UCAL3JXZSzSm8AlZyD3nQdBA
A guy who looks kind of like my college friend, Eben, makes huts and bricks and tiles in the woods using only stuff from the woods. Turn on captions to see explanations.
https://www.youtube.com/watch?v=Q7jcBGLIpus
Just watch this one video where he debunks the Navy’s “ufo” videos.
https://www.youtube.com/c/TheArtofCodeIsCool
He live-codes really impressive scenes in a shader language, like he’s painting with math.
https://www.youtube.com/c/BenEater
Does things like “make a video card on a breadboard out of primitive ICs”.
https://www.youtube.com/c/MarcoReps
He does videos about high precision electronics (like making a 10v power supply that is regulated to 1 part per million), but he has a super soothing voice and makes dry-but-funny jokes.