Positive Gerber viewers sometimes hide layer-order ambiguity — a swapped inner layer still looks correct on screen but fabricates wrong. Before production we send a layer map: you confirm which file is L1, L2, and so on, including plane vs. signal roles.
Reply to the confirmation email (or approve in your account) to release production. Reorders skip this step — the confirmed map is archived with your job.
Upload your Gerber files and get an instant quote.
