Find gaps.

Scans the painted area for unpainted triangles surrounded by painted neighbours. Each gap gets a yellow dot in the viewport. Fix all repaints each gap with whichever colour dominates its immediate neighbours.

• After any large brush stroke or Region pass — quick QA before export.
• After Plane paint or Direction paint, where bulk operations sometimes miss a single odd-normal tri.
• Before exporting a 3MF — gaps slice as printer-base colour, not what you intended.

1. Check tab → Find gaps. Yellow dots appear on every missed tri.
2. Fix all — each gap takes the dominant neighbour colour. Dots disappear.
3. Ctrl+Z undoes the fix if you wanted to inspect manually.

• It only finds gaps — unpainted tris with painted neighbours. A wholly unpainted area looks like one big gap and is ignored.
• Right-click → Find gaps (whole mesh) runs the same action without leaving your current tool.