Instructional videos.

[flint]

Not all are relevant to LCs, but some interesting videos here if not already seen:

https://www.youtube.com/playlist?list=PLIn3FrDiB1lxzthcUMZQOoJi3PNAlVYa6

 

[Bert]

My Lord. Thought I'd look at the universal joint playlist just for fun. No fun was had. I'm not sure if I can get any further......

 

[flint]

Yep, not exactly Breaking Bad territory, but some decent basic info.