How do I punch a hole (no copper) in the middle of a polygon (solid copper) ?
A1: Draw tracks on the keep-out layer (punches holes in every layer) or draw tracks with the keep-out property on same layer as the polygon. A2: “What I do is use a 0.1 mil track to draw features that keep the polygon pour out of select areas. They have a no-net attribute, and conform to existing design rule clearances. During fab, they probably get over-etched into oblivion, but even if they don’t, the design rules should have kept them from causing any problems. These tracks can then be left to be persistent, and no worries of having to delete, move, or re-create features every time you need to re-pour or DRC check.
