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Ants: routing and our own terms (from Nov 2026)
Etching
How the fab makes copper: it starts with a full sheet and dissolves away everything the design does not keep.
How it looks
Real image: CORE3588, rendered by KiCad from our board file
The result of etching on CORE3588, top side, 6 x 5 mm: the whole layer started as solid copper; only the olive parts survived.
- 1Copper the design kept: a track (light olive, under the coating).
- 2Copper etched away: the darker ring is bare board where the copper was dissolved.
How it works
Where it fits