Building an Oxikit DIY Oxygen Concentrator
25:54
6 Unauthorized Uses for a Medical Oxygen Concentrator
14:04
Making Liquid Nitrogen with my Homemade Cryocooler
27:41
High-Vacuum Basics and Evacuating Electron Tubes
5:33
92% of Homeowners Use Teflon Pipe Tape Wrong - Here's Why it Leaks
24:52
How To Deal With Low Oxygen Purity: Part 2
20:37
Our DIY oxygen concentrator briefly explained.
25:58
FREE water forever. LEGALLY!!!!
43:19