Horrible eBay ultraviolet floodlight (with schematic)
23:57
Teardown of a big HEPA air filter unit (with schematic)
19:40
UVC 2023 - the fake and the real (with schematics)
20:59
Finally! I Found the Perfect Budget Knife!
38:34
Making coffee from scratch (is hard)
12:58
40s era F20T12 fluorescent fixture
8:51
How to Make a Real Diamond - (Not Clickbait)
10:21
Stylish Sansi PIR light - with schematic
14:00