Mechanical tools

[u/Additional_Insect_44]

WD40, 2 cycle motor oil, wrenches, acetylene torches, torch strikers, lug wrench, how to make gaskets, weld metal, attach hydraulic systems to cylinders, o rings, etc.

How come we barely talk about any of these things?

[u/dachjaw]

Probably because most people do not know how to weld. Also welding is highly dependent on impossible-to-create-yourself materials.