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Old-School PCB Etching: Why Ferric Chloride Still Works — Alliance Chemical
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Blog post October 15, 2025 13 min read

Old-School PCB Etching: Why Ferric Chloride Still Works

For over 50 years, ferric chloride has been the go-to etchant for amateur radio operators, electronics hobbyists, and engineers creating custom PCBs. This comprehensive guide covers everything from the chemistry of how FeCl₃ etches copper, to step-by-step instructions,...

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