This is finest trace width with cnc milling with auto leveler I could achieved, at right side a few traces I damaged by scrubbing the board :(. But I am happy with
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etching - PCB test patterns to assess etch quality - Electrical Engineering Stack Exchange
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etching - PCB test patterns to assess etch quality - Electrical Engineering Stack Exchange
How Conduct a Short Circuit Test for PCBs | PCB Design Blog | PCB Design Blog | Altium
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Small PCB Test Points (100 pack) - Black : ID 3823 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Page 7 – Printed Circuit Board Manufacturing & PCB Assembly – RayMing
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etching - PCB test patterns to assess etch quality - Electrical Engineering Stack Exchange
Small PCB Test Points (100 pack) - Black : ID 3823 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Heavy Copper and EXTREME Copper PCB Design for Maximum Reliability
