Precision Raw Materials & Centerless Grinding Blog

Compare Costs of In-House vs. Outsourced Precision Grinding

Written by Boston Centerless | Jun 18, 2025 2:00:00 PM


A Cost-Benefit Analysis

When it comes to precision grinding, many manufacturers still cling to the idea that doing it in-house gives them more control and saves money. Saving money has always been on their mind—and on the surface, it seems logical. Keep your grinding in house, keep your quality in check, and save a few dollars.  But let’s be honest: Not everyone has the skills and precision to get tolerances just right.  That’s where Boston Centerless steps in.  

Today’s manufacturers are up against tighter margins, higher complexity, and the constant need to do more with less. That means it’s time to take a hard look at manufacturers who still try to do in-house precision grinding—and the hidden ways it’s holding them back.

The decision between in-house precision grinding and outsourcing these tasks is a critical one for manufacturers aiming to optimize efficiency, cost, and quality. This analysis delves into the careful considerations that go into making this decision, ultimately highlighting why outsourcing centerless grinding services may be the most advantageous choice a manufacturer can make.

Why Manufacturers Grind In House

Let’s start with why the DIY model persists amongst today’s manufacturers. Common assumptions associated with grinding in-house include:

  • Tighter control over part quality – You can directly manage your own output.
  • Reduced costs – You’re not paying a partner, so it must be cheaper… right?

On paper, these benefits may seem compelling. But when you dig into the true costs including capital, space, personnel, and supply chain management, the tradeoffs become clear.

The Hidden Downsides of In-House Precision Grinding

Many manufacturers initially opt for in-house grinding due to above perceived benefits. However, these “advantages” often come with hidden downsides. If you're still managing grinding internally, these hidden pitfalls may be impacting your bottom line more than you realize:

1. Equipment Costs Add Up Quickly

Precision grinding machines are a major investment. That includes:

  • High upfront costs
  • Ongoing maintenance and calibration
  • Downtime for repairs or part replacement

These costs compound year over year—and often go unnoticed until they affect throughput or delivery schedules.

2. Specialized Skillsets Are Hard to Source

Maintaining tight tolerances requires experienced operators. The learning curve is steep, and skilled grinding talent is in short supply across the industry. It can take months, if not years, for personnel to be able to achieve the tolerances required by today’s designs, making it prohibitively difficult to train new grinding professionals as experienced operators retire.

3. Inefficient Supply Chain Management

Every square foot matters at your manufacturing facility. Grinding equipment and material takes up real estate that could be used for value-added production. This includes floor space for:

  • Additional CNC machining centers
  • Better material flow
  • Expanded parts manufacturing capacity

4. Lower Throughput and Potential Bottlenecks

When grinding is managed in-house, your output is limited by your own machine availability and personnel. As demand grows, the system can quickly become a bottleneck—or as demand drops, the space and machinery could be more effectively utilized in other ways.  

Sound familiar? You’re not alone—and you’re not stuck. There’s a better way to get the materials you need at the quality your customers demand.

The Benefits of Outsourcing

That brings us to the solution of outsourcing. Outsourcing your precision grinding operations to a trusted partner like Boston Centerless delivers a multitude of clear, measurable benefits like:

1. Free Up Space and Resources

The space at your facility is limited, so use it wisely. Boston Centerless will even help manage your supply chain with our inventory management program.  Outsourcing your material prep to an external supplier can help you:

  • Reclaim valuable floor space
  • Use your CNC machines to make finished parts, not prep raw stock
  • Shift storage and inventory management off-site
  • Reduce your inventory cost

2. Improve Operational Efficiency

If you’re trying to move more product, outsourcing could be the way to go. Taking precision grinding offsite allows your facility to:

  • Focus your team on revenue-driving work
  • Eliminate downtime from grinding-related delays
  • Increase part flow without overloading your current resources

3. Access to Superior Material and Results

Boston Centerless delivers industry-leading ground bar stock, known for its:

That means faster setups, smoother machining, and better final part quality.

4. Tap Into External Expertise

With Boston Centerless, you don’t just outsource the task—you gain access to a dedicated team of grinding professionals. No training required. No recruiting stress. Just proven expertise, on demand.

Why Boston Centerless Is the Ideal Grinding Partner

Boston Centerless isn’t just a supplier—we’re a full-service solution for grinding and material preparation.

Here’s what makes us a standout partner:

  • AccuRod® Precision Bar: We grind precision bar stock to diameter tolerances as tight as ±0.000050", roundness to 0.000020", and exceptional straightness for smooth, predictable machining.
  • SwissAssist: We provide expert support for every facet of CNC Swiss machining, including setup, tooling, and operator training.
  • Integrated Services: From material sourcing to testing, chamfering, and inventory management, we offer everything you need for precision materials under one roof.
  • Experience Across Critical Industries: Boston Centerless is trusted by leading manufacturers across medical, aerospace, defense, and other industrial sectors.

Our Skilled Material is engineered for superior machinability, which enables manufacturers to reduce setup time, extend tool life, and increase part yield—all without the overhead of internal grinding operations.

Shift the Work, Gain the Advantage

In-house precision grinding may have made sense years ago. But in today’s fast-paced, cost-conscious environment, it's often more of a liability than an asset. While some manufacturers may see in-house precision grinding as a way to increase control and cost savings, the hidden costs and limitations often overshadow these benefits. Outsourcing to Boston Centerless not only mitigates these concerns but also enhances overall operational efficiency, quality, and flexibility.

By making the informed choice to outsource, manufacturers can optimize their operations and maintain a competitive edge in the precision manufacturing landscape. Whether it’s freeing up space, improving throughput, or ensuring superior quality, Boston Centerless positions its clients for success in an increasingly demanding market.

 

Ready to reallocate resources and elevate your production? Let Boston Centerless take
grinding off your plate—so you can focus on what really moves the needle.