The Art of Precision Manufacturing: Where Human Skill Still Beats Automation

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Overview

Recorded live at Artisan Works, an art-focused event space in Rochester, New York, this episode of Manufacturing Happy Hour was part of the show's Rust Belt Renaissance Tour and was held with Fathom Digital Manufacturing during its regional Manufacturing Exchange. Precision-machined components were displayed gallery-style around the room. Host Chris Luecke used the setting to frame the central question: even after decades of automation, how much of precision manufacturing is still an art that depends on human intuition?

20 min read

Three guests answered from different positions. Matthew Bradley, a program director at Moog, is building a new machine shop. James Greer, lead sourcing representative at X-Bow Systems, has walked the floors of hundreds of suppliers across the country. Chris Brown, SVP of sales at Fathom, has worked inside many manufacturing companies. Their shared position was that automation is a tool for specific problems, and that tactile skill, institutional knowledge, and workplace culture remain central to the work.

Who Was on Stage

Greer described his role as having grown from supplier development into lead sourcing. It began with metallic parts and has expanded to propellants, chemicals, energetics, composites, and, since October, additive manufacturing. His plain description of X-Bow was "we build rockets." The company started in 2016, vertically integrates its systems, and focuses on "speed and producibility and scale" as it tries to take on the solid rocket motor industry.

Bradley said his group at Moog is "in the business of building factories." Over the past couple of years it built a new 150,000-square-foot machine shop and is filling it with about 100 machines. These replace the existing shop and include automation systems and advanced machinery. He saw the project as a chance to rethink how Moog makes its parts, not just to swap in new equipment.

Brown described Fathom as seven manufacturing sites offering 25 manufacturing services, from additive manufacturing to sheet metal. All are highly certified and staffed with skilled labor, and they take on "some of the most complex and challenging parts."

Tolerances in the Millionths and Parts You Have to Feel

Bradley explained that Moog is a motion-control technology company. It makes components for applications where things must move reliably: aircraft, space systems, submarines, and medical devices such as pumps. Some of its parts are machined toward tolerances in the millionths of an inch. He admitted the company sometimes struggles with whether such tolerances can even be measured.

For Bradley, the art lies in tasks that cannot be automated because they require a person to feel what is happening. His example came from flight controls. When a servo valve is assembled, interference-fit parts go together within thousandths of an inch. A technician turns a device to join the pieces, and if they feel a click, something is wrong. Moog automates where it has "figured out the secret sauce" well enough to write it down and turn it into a procedure. For some precision motion-control work, Bradley said, the company hasn't found a way to do that, and he doesn't think it will. In his view, a human will always need to be there to feel and understand what is going on.

231 Machine Shops and a 60-Second Response

Greer approached the question from the shop floor. He said he had visited 231 machine shops in just over two and a half years, from Oregon and Seattle to Miami, Augusta (Maine), and Los Angeles. He added that several Rochester shops had contacted him in 2024 and he hadn't yet managed to visit them.

His picture of the art centered on a "gold standard" shop he once visited. A large screen on the wall showed every machine running. While he sat in the waiting room, one machine went red. Greer said he timed it on his watch. Within exactly 60 seconds a door opened and three engineers ran onto the floor, which he compared to Monsters, Inc. The machine was running again within five minutes. When he asked about it, he learned it had been an error. The lesson he took was about attention to detail and how much an idle machine can hurt a shop. He also recalled photos he had collected of machined parts he considered "beautiful works of art," and said being in an art space made him think about the work from that angle.

Novel Parts and Institutional Knowledge

Brown located the art in novel designs. Making something for the first time draws on institutional knowledge, which he said is hard to transfer and hard to pass down. The skilled person is the one who can say they have seen this problem before, perhaps in pieces across three different jobs, and think they know how to solve it. He argued that a simulation can't do that, and that CAD-to-CAM programming won't catch all the details of a new part. Referring to Greer's story, he said problems like that happen at machines everywhere, and "I don't care how much AI you throw at it. The human brain is what needs to solve that problem."

Greer added that across the country, when such problems come up, the less experienced machinist usually goes to the shop's senior machinist. He also said the age range of machinists nationally is wide. He meets "really young geniuses" as well as very experienced men and women still at the machines.

Where Automation Pays Off, and Where It Bites

Asked where automation adds the most value, Brown said it tends to be applied where it is easiest: high-volume, repetitive work that doesn't need an artist watching and that a company doesn't want to tie up labor on. He warned that this is also where automation "tends to bite people the most." He had worked at manufacturers that automated everything, including the very first setup, and said he couldn't begin to describe how much scrap those facilities produced.

His advice was that the analysis can't stop at ROI. ROI will always look good above a certain quantity. Companies also need to ask what can go wrong and what sensors are needed, including human ones. People have ears, minds, and noses that can smell burning lubricant and prompt an adjustment. Brown said no sensor will tell you a lubricant is slightly off the way someone with 15, 20, or 30 years of experience can.

Moog's Case: Automation to Solve Three Problems

Bradley described Moog's approach as deliberate. The company is not automating "for the sake of doing it" or to have the most impressive system; it is automating to solve problems. He named three.

The first is staffing. His division has about 330 machinists and expects to double in size over the next ten years. The Buffalo area has apprenticeship programs and partnerships with local colleges and training centers, but Bradley said "they can't keep up." In his words: "If we're going to double in size over the next 10 years, we can't go make or find another 330 machinists." Because much of what those machinists do is "on the level of art," he called them a critical, precious resource that can't simply be produced. Automation is meant to take lower-skill work that doesn't need an artist and turn it into a method a system can run. He stressed that this isn't meant to minimize anyone's work; the goal is to use a scarce resource as wisely as possible.

The second problem is flow. After 75 years, and 40 years of making parts for the same platforms, Moog still runs a batch-and-queue job shop that Bradley said "looks like a plate of spaghetti." The third is aging equipment that needs replacing.

Together, these led the group to rethink production. More capable machines let it compress routings and combine operations. Two three-axis mills become one five-axis mill, and Swiss lathes are being replaced by mill-turns. The group was also told to ask "why" about every process. Bradley said aerospace carries a lot of inertia, where parts are made a certain way because they have been made that way for 30 years. In many cases, the team found no real value in steps that had been done for decades.

Eliminating Setups and Using Common Processes

To fix flow, Bradley's team looked across products for processes the parts had in common and grouped them together. He described the old way: an operator checks the queue, picks the highest-priority job, and possibly performs a setup that could take a shift or two. The operator then runs a batch of around ten, since Moog doesn't make anything in high volume, and the part moves on through more queues. Combining operations into common processes has let the team cut some processes from weeks to days, according to Bradley.

The other major goal is eliminating setups entirely. Automated cells use a common tool package. A part that fits the package is admitted into the cell "and kind of take[s] the fast lane," whatever it is called or looks like. A part that doesn't fit stays out, because the cell isn't meant to be changed over. Bradley noted the limits: some manual deburring can't be automated, because someone has to look six inches into a part to confirm there is no burr and remove it. His summary was that automation is a problem-solving tool, not "the solution to everything."

A Palletized Cell for Overnight Prototypes

Greer offered an example from a recent supplier visit. He first noted that Buffalo trains technicians, and pointed to other places doing similar work: the Midwest, including Wisconsin and the Chicago area, and Alabama, where he said four universities now teach it as curriculum. He described himself as a "conduit" in the machining industry. People call him looking for estimators, machines, or robots, and he tries to connect businesses.

The shop he described used a palletization system with tombstones for low-volume, high-mix work. Technicians programmed each part themselves, which also gave them hands-on practice. They set jobs up in the evening and had prototypes nearly done by morning. Greer said this mattered a great deal in his industry, because getting a prototype built quickly lets a company assemble it and show a customer what it can do. Bradley agreed.

What People Miss When Evaluating a Shop

Luecke asked Greer what people tend to overlook when assessing a supplier. Greer answered with his own training. At his previous employer, which he identified as Northrop Grumman, he became machine shop IPT lead. His team included a senior quality engineer who was AS9100 audit-certified and had owned a machine shop for more than 50 years, and another engineer with 48 years in quality. Greer said he had never been as embarrassed as he was after his first site visit, because he didn't yet know what he was looking for.

He had to learn to turn over measuring equipment to check calibration dates. He also had to learn manufacturing process flow: after a visit, he had to lay out and explain a supplier's process flow to his team, and if it didn't make sense, "it was horrible for me." He said he was "dragging my knuckles" for about six months. Then his colleagues started calling him "bro" in emails, and he knew he had earned his place. Today, he said, he can walk through a machine shop and tell its "honest capacity."

Upstate New York's Manufacturing Base

Luecke turned to the host region. Some attendees had told him they were glad the show came, since many people skip over Upstate New York. Bradley started with Rochester's Gleason Works, which he called the world hub for gear manufacturing. If you need a gear hobbing machine or anything related to gears, he said, it's here. He attended RIT's Kate Gleason College of Engineering, and noted that Gleason machines are found around the world, including in Moog's shops.

Moving toward Buffalo, Bradley confirmed that the city smells like Cheerios because of the downtown General Mills plant. He listed the Ford stamping plant, a GM engine plant, and Moog, which has about 4,000 people between Buffalo and Niagara Falls, along with many other aerospace companies. His point was that Buffalo has been an aerospace hub since before World War II and still is. People remember it as a steel town because of Bethlehem Steel, he said, but other manufacturers kept growing alongside it, and that growth "hasn't slowed down at all." The result, in his view, is a largely unrecognized hub of advanced precision manufacturing.

Luecke mentioned conversations about Kodak: its talent hadn't left Rochester but had spread into other organizations. Bradley agreed that Kodak seeded many Rochester businesses, making the city an optics hub, and that local companies also make metrology equipment Moog buys. Buffalo, he said, leans less toward optics and more toward machined components, metalwork, and assembly.

Jobs That Are Changing, Not Disappearing

Bradley said the region is seeing a manufacturing resurgence that probably doesn't get enough attention. He stressed that the jobs aren't going away; they are growing, but they are changing. In the past, a machinist might stand at one machine for a year or two before becoming proficient, and might not be fully signed off until they could run all 500 part numbers made on it. Moog is trying to turn that knowledge into a formula. The work it needs now includes supporting automation systems and maintaining five-axis and other complex machines.

He described the moment as an inflection point. In his opinion, the industry isn't yet where it needs to be, but companies are realizing they need training programs and need to tell people that these are high-paying, high-skill, exciting jobs.

Lessons from Other Regions

Asked which other region does something well, Greer named Oregon, which he said surprises people. In the Portland-area shops he visited, technicians are also programmers and planners and perform WIP inspection on the floor, which he called unusual. He said these shops pay well and hold high standards; as he described it, if a worker dozes off at a machine, there is zero tolerance.

He contrasted this with Boston and Los Angeles. There he might see the same technician in a different shop four months later, because workers in those larger cities move for pay bumps of 25 cents to a dollar.

Greer also shared his own read on the national market. He said that around the start of Q4 he saw roughly a 17 to 24 percent jump in manufacturing activity across the country all at once. In Phoenix, where he is based, he said the semiconductor industry was largely shut down for about the first three quarters of the year because of tariffs, while companies worked out how to maneuver around them. Once they did, he said, production picked up, and not only there but across the country. He said he feels this personally from his conversations with shops. Prototyping work, which he called unglamorous and not enough to keep the lights on, can lead to high-volume work that does.

Culture as a Competitive Advantage

Asked how their organizations contribute to the manufacturing resurgence, Brown focused on culture. Companies can train endlessly, he said, but without the right culture they will lose people "every single time." He suggested culture is the question most often left out of supplier evaluations. Ask a 40-year veteran what they think of the culture, and you will get either a reply that makes you want to leave or a warm one. He considered it even more important to ask the youngest person there, someone 20 to 22 years old. If they feel supported and can ask a veteran how they made a similar part and what went wrong last time without being told off, they are likely to stay in manufacturing.

He recalled a guest from an earlier podcast, a machinist with 30 years of experience. That machinist's son finished two years of school, joined his father's shop, and left the trade three weeks later because he was yelled at every time he asked for help. Brown said Fathom has done "incredibly well" at creating environments where people fit in, can ask questions, and aren't afraid to make mistakes. Young people in this industry will make many mistakes, he said, and if they are treated as lessons learned, those people will stay.

Bradley agreed and described Moog's culture work during its transition. Jobs done one way for 40 years are changing, and the company wants to manage that change compassionately and give people the resources they need so their experience stays positive. Moog also emphasizes that its parts are flight-critical and that someone's life may depend on a feature a machinist is making. Bradley said you can walk through the shop, ask anyone what they're working on, and they will tell you what it is, how it's used, and why it matters. He called that ownership and pride critical to engagement.

On the regional commitment, Bradley said most of his division's work is for the US military, including military aircraft. Moog intends to keep making that hardware in Western New York or at its other US sites, such as California. It has new programs on the horizon and has already drawn up plans for the next expansion of the facility when that work arrives. "This is our home," he said, describing the company's roots in the community.

A Shop Owner Who Bought His Employees' Homes

Greer said X-Bow recruited experienced people from across the solid rocket motor industry, generally with about ten years of experience or more, who were ready to "make the jump" to a startup. He described his colleagues as passionate, pointed to the many videos of static fires and launches on the company website, and said everything the company makes must be made in America for the Department of War. The company also makes FMS sales.

He then shared the lesson that stuck with him most. At a machine shop in San Jose, the owner introduced "Mark" as his least-tenured employee, with 24 years. When Greer asked how that was possible, the owner explained that he invested in his people. Instead of having employees take out car loans, personal loans, or mortgages from financial institutions, he bought their homes through the business, and employees received a discount. Later, a shop owner in Alabama told Greer he was struggling to retain workers. Greer told him the San Jose story. The owner noted that real estate is cheap in his area and said Greer had given him a great idea. Greer said he plans to go back about a year later to see whether the culture has changed.

Greer added that he has seen spotless shops and shops where metal shavings line the floor, yet the messy shops sometimes produce "mind-boggling" work. His most striking recent visit was in the Charlotte, North Carolina area. He said he had "never seen such happy technicians in a shop," with at least one technician-programmer per machine and polished floors, something he said he hadn't seen anywhere else in the country.

Balancing Speed, Throughput, and Craftsmanship

In a final quick round, Luecke asked how engineering teams balance speed, throughput, and craftsmanship when scaling up. Bradley's answer was "going slow to go fast." Moog is moving 1,500 parts from one factory to another, and the team spent two and a half years planning before making the first move. That planning covered the future state of each part, contingencies for machine downtime, contract reviews to avoid contractual problems, and tooling. With plans A, B, and C in place and everyone clear on the mission, execution goes much more smoothly, though he acknowledged there will still be hiccups. "If you go too fast, you will be worse off in the end."

Greer said the question was hard for him because his phone is effectively a 911 line, and he is usually expected to answer in five minutes or within 24 hours. X-Bow moves faster than most companies, he said, but is also "very, very risk-averse," because "with a rocket, you get one shot and that's it." You can't take it back or refire it, so diligence is essential. Sometimes he wants drawings faster than he can get them, but he accepts that. "Slow, smooth, and methodical" are key words for him.

Brown, noting he isn't an engineer, closed with "keep it simple" and time-box decisions. His admittedly controversial line: ask five engineers to solve one problem and "there'll be 10 answers and 20 hours of argument." Sometimes your gut is right, he said, and you should trust it and move forward, because manufacturing is about solving problems, and they need to be solved quickly.