Case Study Summary

Problem

Custom Magnetics of California was experiencing increased demand for their custom transformers and their existing material sourcing strategy was no longer enough to keep production running smoothly. While Copper and Brass Sales already supplied them with copper coil, scaling operations revealed two critical gaps: the need for a more efficient inventory management strategy to optimize space and cash flow, and a dependable secondary source for custom copper bus bars to reduce reliance on a single supplier. Without stronger supply chain support, the company risked delays, constrained production, and missed opportunities for expansion.

Solution

Copper and Brass Sales delivered a dual strategy that addressed both immediate and long-term needs. We implemented a tailored stock-and-release program for copper coil, ensuring Custom Magnetics had materials available when needed without overloading storage or tying up capital. At the same time, we became a trusted secondary supplier of custom copper bus bars, leveraging our precision CNC fabrication capabilities to deliver high-quality parts on tight timelines. Together, these solutions improved operational efficiency, built supply chain resilience, and gave Custom Magnetics the confidence to scale production and take on new business without hesitation.

Introduction: Powering Innovation in Transformer Manufacturing

Founded in 2013, Custom Magnetics of California specializes in the design and manufacture of high-performance transformers, with a focus on thermal management and custom configurations. Serving customers in data centers and other high-demand sectors, the company has earned a reputation for engineering precision and fast turnaround times.

As demand for their custom solutions continued to grow, Custom Magnetics entered a new phase of operational expansion. With a lean team of just 35, they needed a dependable supply partner who could keep pace with their production demands, offering flexibility, speed, and consistent material quality to support ongoing growth.

The Problem: Limited Inventory Flexibility and Growing Material Demands

As demand for their custom transformers increased, Custom Magnetics required more than just raw copper coil. They needed:

• A consistent and responsive source for custom copper bus bars, which are critical components in their transformer builds
• A smarter approach to copper coil inventory management, one that would reduce on-site storage needs and improve cash flow

While they had a primary supplier for bus bars, tight project timelines and rising workloads meant that relying on a single vendor introduced risk. At the same time, limited storage space and tied-up capital made managing growing coil requirements a challenge. Without stronger materials management support, scaling efficiently would be difficult.

Our Solution: Reliable Supply and Smarter Inventory Management

We partnered with Custom Magnetics to support their rapid growth and streamline operations through flexible sourcing and smarter inventory strategies.

A Trusted Secondary Source for Custom Copper Bus Bars

To help maintain production continuity, we became a reliable additional supplier of custom copper bus bars, providing added flexibility and peace of mind. This additional resource ensured that Custom Magnetics could keep pace with demand, even when facing delays or limitations from their primary vendor.

Leveraging our advanced CNC fabrication capabilities, including punching, bending, and cutting, we produce both fully customized and standard repetitive copper bus bar components. Our ability to offer fast turnaround on precision-fabricated parts makes us an ideal partner for high-mix, quick-turn manufacturing environments like theirs.

Tailored Stock-and-Release Program for Copper Coil

To address space and cash flow limitations, we developed a customized stock-and-release program for copper coil.

This program gave Custom Magnetics access to the coil they needed when they needed it without overburdening on-site storage or tying up capital. The result was both operational efficiency and peace of mind, knowing that essential materials were always on hand to support production.

By combining reliable material sources with strategic inventory support, we enabled Custom Magnetics to focus on what matters most: meeting customer demand and accelerating growth.

The Result: Flexibility, Growth, and Peace of Mind

Partnering with Copper and Brass Sales gives Custom Magnetics the agility with materials inventory management they needed to thrive during a critical growth phase.

Maximized Floor Space and Cash Flow

The stock-and-release program minimized raw coil stored on-site, freeing up valuable production space for revenue-generating work. At the same time, pay-as-needed flexibility improved cash flow, strengthening financial efficiency.

Uninterrupted Production Through Reliable Bus Bar Supply

Our role as a trusted secondary supplier added resilience to their supply chain. When primary vendor lead times tightened, Custom Magnetics relied on us for quick-turn delivery of high-quality bus bars, preventing costly production delays.

Increased Efficiency with Precision-Fabricated Components

By delivering bus bars cut, bent, and punched to exact specifications, we reduced the time their team spent on repetitive fabrication. This allowed technicians to focus on higher-value assembly and engineering, improving throughput and accelerating turnaround times for their customers.

Confidence to Scale Without Hesitation

Most importantly, the partnership gave Custom Magnetics confidence to accept new orders and pursue larger projects. With reliable inventory support and flexible sourcing in place, they could expand their business knowing their supply chain was ready to grow with them.

Facing Similar Challenges? We Can Help.

If you're scaling operations and need supply chain solutions that match your pace, we can help.

Copper and Brass Sales provides strategic inventory programs, custom material sourcing, and personalized service to help manufacturers stay agile, reduce risk, and support growth.

Contact us today and build a supply chain that you can count on.

thyssenkrupp Materials NA makes no representations or warranties regarding the suitability of any companies, or their goods or services, referenced in these materials. thyssenkrupp Materials NA does not endorse, recommend, or guarantee any such companies or their goods or services.