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Precursor’s Custom PCBs

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Hardware

While the last few updates about Precursor have focused on evidence-based trust and security, this update is more about the process of making Precursor itself. There is an essential link between evidence-based trust and understanding the manufacturing process: to convince yourself that something has been constructed correctly, it’s helpful to understand the construction process itself. It’s hard to tell if a small crack in a wall is the result of harmless foundation settling, or a harbinger of a building’s imminent collapse, without first understanding the function and construction of that wall.

Most designers like to abstract the PCB away as a commodity service, preferring “no-touch” or “one-click” ordering services where design files are uploaded and finished boards arrive in the mail, on time and at a good price. This is a bit like running a restaurant and ordering your produce from a mass distributor. The quality is uniform, delivery times are good, and the taste is acceptable. However, it’s hard to make a dish that’s really differentiated when basic ingredients all come from the same place.

I personally enjoy building electronics with a bit more of an artisanal flavor. Just as gourmet chefs invest the effort to develop relationships with their farmers, I’ve developed a personal relationship with my preferred PCB shop, King Credie. Since a PCB is at the core of virtually everything I build, I have found developing a healthy personal relationship with my PCB supplier has the benefit of raising the bar on virtually all my products. While King Credie is neither the cheapest nor the quickest-turn of PCB shops, their quality is consistent and, most importantly, they are willing to customize their process. For a small shop, they offer a wide variety of speciality processes, such as rigi-flex, metal core, edge plated cavities, HDI, and custom soldermask colors.

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