PCB & Semiconductor Manufacturing | May 20, 2026
When Apple and Nvidia Say "Build It in America," Someone Has to Make the Tooling
How CPI's precision carbide machining, EDM, and grinding capabilities serve PCB assemblers and semiconductor equipment manufacturers across the domestic electronics supply chain.
Apple committed $600 billion to U.S. manufacturing over four years. Nvidia announced $500 billion in domestic AI infrastructure. GlobalFoundries pledged $16 billion to expand semiconductor fabrication capacity on American soil. The announcements keep coming, and the supply chain math behind them is starting to land in procurement departments at every level.
Here's what those headlines don't say: a semiconductor fabrication line — or a PCB assembly line, or an in-circuit test station — is not built from silicon and circuit boards alone. It runs on thousands of precision-machined components: fixture bodies, wear parts, alignment features, probe guides, vacuum seal surfaces, and tooling that holds position to sub-thousandth tolerances through millions of cycles. Before a single chip is produced or a single board is assembled, someone has to make the tooling.
That's where CPI fits into this story.
CPI has served precision-demanding industries — aerospace, medical, automotive — for over 80 years. The capabilities that keep those supply chains running translate directly to PCB assembly and semiconductor equipment manufacturing. This is not a new direction for us. It's the same work, applied to a sector that's now actively looking for domestic suppliers who can deliver.
What PCB Manufacturers Actually Need From a Precision Shop
PCB fabrication and assembly require tight-tolerance carbide tooling and custom fixtures at nearly every stage of production. Most of those components are still sourced overseas — a dependency that's getting harder to justify as lead times stretch and supply chain exposure accumulates.
CPI serves PCB manufacturing across several application areas:
- Wave solder pallets and SMT assembly fixtures Every assembly line requires custom fixtures matched to a specific board's geometry. CPI machines these to ±0.0005" — producing precise board-matching pockets and locating features that maintain dimensional accuracy through thousands of thermal cycles. Prototype-to-production capability covers both NPI and volume runs.
- ICT and functional test fixture components In-circuit test fixtures use spring-loaded probe pins that must contact test points with exact repeatability across 100,000+ insertions. The alignment features, guide pins, and hardened bushings that make this work require positional accuracy that conventional machining can't reliably produce. CPI's Wire EDM holds ±0.00012" (3 microns) — the tolerance this application demands.
- Wear components for PCB equipment Depaneling machines, automated pick-and-place systems, and board-handling conveyors all consume wear parts: guide rails, carbide inserts, nozzle tips, and linear guides. CPI forms and grinds carbide wear components to tight flatness and straightness tolerances, with centerless grinding for cylindrical parts and induction brazing to bond carbide tips to steel bodies cost-effectively.
Semiconductor Fab Equipment: Where the Tolerance Requirements Get Serious
Semiconductor fabrication equipment sits at the top of the precision manufacturing stack. Photolithography systems, CVD reactors, CMP polishing equipment, and wafer-handling systems demand components that other shops routinely decline to quote. Wafer chuck bodies, vacuum seal surfaces, flow control parts, and pressure transducer diaphragms require near-mirror surface finishes, sub-micron dimensional accuracy, and material traceability that most machine shops can't provide.
CPI runs toward this work. A few specific capabilities are worth naming:
EDM threading in carbide and ceramics is a specialty that separates shops capable of semiconductor tooling work from those that aren't. When a component requires threaded features in a hardened or ceramic substrate — and conventional thread-forming would fracture the material or disturb the surface — EDM threading is the only practical method. CPI has the equipment and the process knowledge to do this reliably.
Beyond threading, CPI's sinker EDM holds ±0.0001" on complex internal cavities and seal geometries. Precision grinding produces near-mirror finishes on carbide and hardened steel — the surface quality vacuum seal faces and wafer contact surfaces require. The climate-controlled facility supports dimensional stability during tight-tolerance work. And we can provide serialized inspection reports and material lot traceability documentation that meets semiconductor supply chain requirements.
CPI capability matched to semiconductor fab applications:
- Sinker EDM to ±0.0001" Complex internal cavities, vacuum and flow control geometries, seal features that can't be reached by conventional cutting tools.
- Wire EDM to ±0.00012" (3 microns) Precision cavity tooling, intricate profiled features, through-features in hardened materials — at a tolerance that competes with EDM-specialist shops.
- Near-mirror surface finishing on carbide and hardened steel Wafer chuck surfaces, seal faces, and wafer contact components where surface finish directly affects yield.
- In-house heat treating and brazing Carbide-tipped and bonded assemblies for wear-critical components; hardening after machining for components that need wear resistance without dimensional distortion from outsourced heat treating.
- Serialized QC and material lot traceability Every order includues material lot tracability. We can also provide serialized inspection reports that document the dimensional accuracy of each component — a requirement for many semiconductor supply chains.
The Domestic Sourcing Argument for Electronics Tooling
The same procurement calculus driving the Apple and Nvidia announcements applies at the component and tooling level, just with less press coverage. An ICT fixture made in Taiwan carries the same supply chain exposure as any other import-dependent part — extended lead times, customs uncertainty, and traceability documentation that may not satisfy an OEM's audit requirements. A wave solder pallet from an overseas supplier takes 6–14 weeks to arrive. A fixture issue discovered during NPI can't wait that long.
CPI is in Georgetown, KY. That puts us within logistics reach of Ohio, Indiana, Tennessee, and the broader Midwest electronics manufacturing corridor. Our lead times are often a fraction of what you'd get from overseas suppliers. When a fixture wears out or a board revision requires updated tooling geometry, the conversation happens in a time zone that matches yours.
We're also willing to be honest about fit. If a job doesn't match our capabilities, we'll tell you. What we won't do is quote something we can't deliver. That's been our approach for 80 years — it's not changing because the market is moving in our direction.
How to Start the Conversation
If you're sourcing precision components for PCB assembly equipment, semiconductor fab tooling, or test fixture work — and you're evaluating domestic suppliers — the fastest way to understand fit is to send us a print. We'll review it and give you an honest read on whether CPI is the right shop for the job, what process we'd use, and what the timeline looks like.
No minimum quantities. No boilerplate quoting. A real conversation with engineers who've been solving precision machining problems since 1943.
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