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80 I-CONNECT007 MAGAZINE I JUNE 2026 In PCB design, time and effort are every- thing. You've spent weeks perfecting your sche- matic, routing traces, and ensuring signal integrity. Finally, you generate those Gerber files and send them off to your preferred PCB fabricator. It's a mo- ment of relief: The design is out of your hands, and production can begin. But what happens next? For many PCB designers, the answer is surpris- ingly unclear. Fabricators often make manufac- turability adjustments without providing detailed feedback, leaving designers unaware of recur- ring issues. The solution is not waiting for better communication from the fabricator. Designers can implement independent CAM validation tools that give them direct visibility into manufacturability problems before release. This handoff is notoriously known as "throwing it over the wall," a term that vividly captures the abrupt, one-way transfer of files with minimal communication between designers and fabricators. Behind that wall lies a host of unknowns that could torpedo your production timeline, or worse, under- mine your design's performance. The "wall" isn't just a metaphor; it has, in fact, become a literal barrier erected by the hyper- competitive nature of global PCB fabrication. With razor-thin margins and instant online quoting systems, fabricators prioritize speed and customer retention above all else. They battle for volume in a market dominated by low-cost providers, with many of them being overseas, where a single delay could send a client jumping ship to a competitor. As a result, when your unverified production files arrive, which could potentially contain issues such as undersized drills, misaligned layers, or missing board outlines, fabricators often choose not to object. Instead, they might quietly intervene, or they might not. The uncertainty leaves designers in the dark and perpetuates a cycle of inefficiency and missed opportunities to improve. The Competitive Blind Spot Imagine submitting a set of Gerber files with a sub- tle flaw: a solder mask opening that's too narrow, risking shorts during assembly. In an ideal world, the fabricator would flag the issue, explain it, and BY ST E P H A N S C H M I DT, P E N TA LO G I X F E AT U R E A RT I C L E No Feedback, No Progress THE PCB DESIGNER'S BLIND SPOT