Different kinds of truss rods , how they work, how the affect the guitar neck.
types of rods (00:25)
Square tube (00:35)
in the neck
Martin single action (02:20)
in the neck
LMI single action (04:15)
Hot rod double action (05:25)
Putting them in the vise
Square tube (07:30)
Martin single action (09:45)
LMI single action (14:00)
Double action (15:55)
How the rods affect the guitar neck (19:45)