Inside 4 Flutes Machining in Vicksburg, the work is precise, technical and deeply connected to something bigger than the shop floor.
Machines move with quiet force. Metal is cut, measured and refined. Parts take shape through a process that depends on skill, patience and trust. For someone walking into a shop like this for the first time, it can be hard to know exactly what’s being made or where those parts eventually go.
Zack Bishop, founder of 4 Flutes Machining, explains it directly.
“Manufacturing is a lot of different things, but at this shop we are defense contractors,” Bishop said. “So we make parts that support and defend the United States of America. Different programs for weapon systems or ground vehicles or satellites for outer space. That’s what we make here.”
That answer puts the work of 4 Flutes into focus. From its facility in Vicksburg, the company is producing high-precision components tied to defense, aerospace and space-related programs. It’s advanced manufacturing with a clear purpose, connecting Southwest Michigan talent to work that reaches across the country and beyond.
4 Flutes specializes in complex CNC machining, using advanced equipment to produce parts where accuracy and reliability matter. The company’s work sits inside a larger defense and government supply chain, where small and mid-sized manufacturers can play an important role in supporting major programs, prime contractors and national needs.
For Bishop, that responsibility is something the company takes seriously.
The story of 4 Flutes began with one machine and a founder who was still working full time while building the business. Since then, the company has grown into a more advanced operation with a team, a facility and a role in industries where precision is essential.
When Bishop looks around the shop today, he sees more than machines and contracts.
Zack Bishop, founder of 4 Flutes Machining, shows how precision components take shape inside the company’s Vicksburg facility.
“It means a lot,” Bishop said. “It means we have found the American dream. It means that we have assembled a team of men and women who all have a similar goal and a similar mission, and it means that we have something to be proud of.”
That pride shows up in the way Bishop talks about the work. The company is built around people who understand the importance of the end use, the expectations that come with defense work and the opportunity to do that work from a small community in Southwest Michigan.
4 Flutes has also been recognized for its growth in the government contracting space. The company was named a 2024 APEX Accelerator Best Small Business by Michigan Celebrates Small Business, an award tied to demonstrated growth through government contracts, contributions to Michigan’s economy and the company’s relationship with APEX Accelerator. That momentum has continued into 2025. 4 Flutes Machining was also named one of the 2025 Michigan 50 Companies to Watch by Michigan Celebrates Small Business, while Bishop was recognized by the Michigan Manufacturers Association as a 2025 Manufacturing Emerging Leader.
APEX Accelerators help businesses understand and compete in the government marketplace. For manufacturers like 4 Flutes, that kind of support can be an important bridge between technical capability and government contracting opportunity. It helps companies navigate the process, understand requirements and position themselves for work that can be difficult to access without the right guidance.
For a company already built around precision and high standards, that support helped connect local capability to larger opportunities.
4 Flutes and Southwest Michigan APEX were also recently recognized nationally as one of six APEX Accelerator success stories, further highlighting the company’s path from a growing CNC shop to a supplier serving advanced defense and aerospace needs.
Jeff Coney of Southwest Michigan First, left, tours the 4 Flutes Machining facility with founder Zack Bishop, right, inside the company’s Vicksburg shop.
But even as the company’s reach has grown, Bishop’s view of the business still comes back to place. The work may support national and global programs, but the company is rooted in Vicksburg and Southwest Michigan.
“It means that we’re moving the needle,” Bishop said. “We’re making an impact not only in our own community, but in our nation and globally.”
That local connection matters to Bishop. Growing in Southwest Michigan means building a company in the same region where his team lives, works and raises families. It also means proving that advanced manufacturing and high-level defense work do not have to be limited to major industrial hubs.
“It’s our community. It’s our home,” Bishop said. “There’s a lot of opportunity. There’s an enormous amount of talented people in this area. And it’s safe place to raise children, grow families. We like it here. It’s where we’re all from.”
That belief in local talent is central to the company’s story. 4 Flutes is part of a generation of manufacturers showing what modern machining looks like today: clean technology, advanced equipment, skilled workers and work that requires both technical ability and a strong sense of purpose.
Inside the shop, that purpose is visible in the details. The machines are impressive, but the larger story is about the people behind them and the standards they are working to meet. In defense and aerospace manufacturing, quality is not a talking point. It’s the job.
A 4 Flutes Machining employee works at a waterjet cutting machine inside the company’s Vicksburg facility.
For Southwest Michigan, companies like 4 Flutes represent an important piece of the region’s economic future. They create opportunities for skilled workers, strengthen the local industrial base and show how a company in Vicksburg can contribute to work with national significance.
The combination of country, community and capability is what gives 4 Flutes its momentum. The company is not only focused on what it has already built. Bishop is looking ahead to what the team can become next.
“We’re going to continue to grow,” Bishop said. “We’re going to continue to scale. We’re going to continue to leverage the opportunities that we’ve been presented. And we’re going to continue to put our money where our mouth is. We’re going to try and do something that hasn’t been done before, and we’re going to continue to assemble a team of people who are very capable of doing incredible things.”
From one machine to defense and aerospace work, 4 Flutes Machining has grown into a company with a clear sense of purpose. Its work supports the country, creates opportunity at home and shows what can happen when advanced manufacturing, local talent and American-made pride come together in Southwest Michigan.
About 4 Flutes Machining
4 Flutes Machining is a precision CNC manufacturing company based in Vicksburg, Michigan. The company produces high-precision components for advanced industries, including defense, aerospace and space-related programs. With a focus on quality, reliability and American-made manufacturing, 4 Flutes Machining connects skilled Southwest Michigan talent to work that supports national and global needs.