A SIGN NEXT TO a side-entrance door at Seven's humble, 15,000-square-foot facility reads, RING IF YOU'VE GOT DONUTS. One morning, Seven marketing chief Jennifer Miller and I come armed. The sticky-sweet breakfast, which is a tradition for Seven's 24-person manufacturing staff, commences.

"Ohhh, the good ones!" says a guy wearing smudged safety glasses, grabbing a doughnut dusted with chocolate sprinkles.

Amid the racket of metal being cut and welded, I'm led to one end of the shop, where a machinist starts the frame-building process by selecting tubing. Unlike other bike brands, Seven sources its titanium exclusively from U.S.-based mills, which have the highest fabrication standards in the world. A lot of Seven's carbon-fiber tubing is "filament-wound"—another way of saying precision-made by computer-controlled machinery.

"There are no voids, and the compaction and ratio of epoxy to carbon from a tube six months ago and a tube today is identical," Vandermark later explains, lapsing into geekspeak. "It's predictable, repeatable, and durable."

Instead of performing just one menial task, a technician in each of the company's three manufacturing departments—machining, welding, and finishing— is responsible for seeing one frame all the way through to the next production stage. The machinist I'm watching, for example, must fabricate every tube for a Seven titanium frame. Farther down the line, I meet a welder named Skunk. He's 37, shaggy-haired, heavily tattooed, and wears combat boots that are four sizes too big. But Skunk's organized workspace reveals the methodical dweeb within. He even made the folding workbench that helps him better maneuver around his work.

A Seven welder can take four hours to assemble a single frame. You see the difference when you examine Skunk's handiwork. "Look at that head tube!" he says while hovering over an Aerios road frame. "Welds like a stack of dimes!"

If the customer has ordered a Seven fork, it gets plugged with one of 12 different sets of dropouts, or aluminum fittings that hold the front wheel at a precise angle to the ground. Vandermark believes that changing out such bits can transform the way a bike handles.

Finally, the frame enters Seven's finishing area. At one end, a burly guy with a ripped T-shirt furiously polishes a mountain-bike frame. Close by, a woman applies decals. And outside of two silvery paint booths is a rack holding frames with custom fade and "lucky-seven dice" paint jobs. Customers have also requested smiley faces, flames, multiple shades of green—you name it.

"One guy wanted a starry-night scheme with the moon," a technician tells me. "On tubes. You have to rein them in." In the end, a Seven frame is finished only after it passes a 150-point inspection. "There's a tiny bit of discoloration on the back of that cable stop," says quality-control worker Tom Gawlick while poring over a Vacanza touring frame. "That'll have to come out."

You'd think Vandermark would be satisfied when the UPS man comes to pick up another batch of frames. But a perfectionist can never rest. His latest creation—the Diamas, a wildly tapered road frame that he claims is the world's most customizable carbon-fiber bike—is running a year behind schedule, and orders are stacking up. When I ask Vandermark what's causing the delay, he sheepishly confesses. "It's me," he says. "I'm the hurdle."

Seven owners should only rejoice in such obsessive-compulsive pain.