Reader,

Have you ever looked at your instrument and thought, "hm, this is an interesting starting point?"

Jeff Hampton custom builds guitars as an amateur (listen to our interview on Zeitgeist Radio), though if you listen to the interview you'll realize it's a mad steep learning curve even for the basics.

What started as a project to make a "badass-looking" electric guitar turned into a fascination with ergonomics.

Check out the episode (this one has cool visuals so I encourage you to listen on YouTube or Spotify where you can watch the video).

As I learned from Jeff, the body and neck of the guitar offer nearly limitless opportunity to play around, if you're someone with ;) an interest in woodworking, b) a healthy helping of patience... and c) a lot of tools.

The Body

The body of an electric guitar is more than just a foundation to hold the strings and electronics—it plays a crucial role in shaping the instrument’s tone, sustain, and playability.

In electric guitars, the body interacts with its pickups and strings to influence its final sound. The shape of an electric guitar body affects the way vibrations are absorbed. A larger body can produce more sustain, while a thinner body allows for faster response.

Solid-body guitars minimize unwanted resonance, giving a cleaner, more direct signal. This is what Jeff builds.

In acoustic guitars, the hollow of the body amplifies sound naturally. Semi-hollow and hollow guitars add warmth and natural reverb but are trickier to build and can lead to unwanted feedback at high gain levels.

Aesthetics are also a big part of body design. Again, Jeff started out by wanting a badass-looking guitar. For his first project he wanted something "pointy" that went with his interest in Bodymusic. We've probably all been Wowed by a cool-looking guitar at some point!

Finally, the body of a guitar has a lot to do with ergonomics. The shaping can be contoured based on playing style, size of the player, and genre.

The Bridge

Special mention has to go to a guitar's bridge. This is where the strings make direct contact with the body, influencing sustain, tuning stability, and tone.

When a string is plucked, its energy is transferred to the bridge, then to the body. A bridge that is fixed firmly in place maximizes this transfer, leading to a longer-lasting vibration (sustain). In contrast, a bridge that is anchored at fewer points (called a vibrato or tremolo bridge) has more movement and can absorb some energy, which can shorten sustain but allows for expressive pitch modulation (aka cool sounds).

Bridges not only anchor the strings but also control how much vibration reaches the pickups and the player's hands, affecting everything from tone to tuning stability.

The Neck

The neck of an electric guitar is one of its most crucial components, influencing playability, tuning stability, and tone. It serves as the structural foundation for string tension while also shaping the way a guitar feels in a player's hands.

The scale length is the distance between the nut and the bridge, defining how much a string must vibrate to produce a given pitch.

The physics of a guitar neck are pretty cool, but I'll only touch on the basics here. Longer scale lengths require tighter string tension to maintain the same pitch, leading to a brighter sound with more sustain. Shorter scale lengths allow for looser strings, producing richer overtones.

The way a neck is attached to the body affects how it transfers vibrations: Necks are typically screwed or glued onto the body, each affecting sound production differently. There is also Neck-Through Construction, where the neck extends through the entire body, found in high-end guitars. Eliminating a connection point gives a whole new level of control, but this is difficult and expensive to do!

The fretboard radius determines the curvature of the playing surface. A smaller radius is more curved, ideal for comfortable chording, while a larger radius is flatter, allowing for smoother string bending and fast lead playing.

The neck has a direct impact on how an electric guitar sounds and feels. It's actually quite the engineering masterpiece! For a long time Jeff bought pre-built necks, though now he's confident enough to play with them as well.

Turns out, when you want to make something "pointy-looking," there's more to it than just sanding down a piece of wood. You need a full woodworking shop and hours of design and planning. But watching how excited Jeff was to share what he knows about this, it feels kind of infectious.

You won't see me doing any instrument customization anytime soon, but I definitely walked away from this episode with a better appreciation for something I'd taken for granted before... and some hope for finding a guitar someone with my small hands could play comfortably!