My projects are generally inspired by classic designs, but with a twist. I like to build things like basses on guitar bodies, non-standard scale lengths, and occasionally originals, and experiment with materials, finishes, and electronics. One of my great interests is driving the cost out of luthiery by sourcing parts and materials from the hardware store. I prefer to build more guitars than simply more-expensive guitars.
This is my favorite truss rod design. It is not my most advanced, but it is the simplest to build. Although it is a single-acting rod, a little forethought in routing the channel makes it reversible, effectively double-acting. That requires some disassembly of the guitar, but you only need to change the direction of the rod once or twice in the life of an instrument, until it settles in to a mature shape.