Repair Open Polylines

Closes open polylines by connecting their start and end points with a straight segment.

When to Use

• After importing files with broken geometry
• When the broken polyline highlighting reveals open paths
• Before boolean operations that require closed polygons

Options

Option	Description	Default
Maximum gap	Only close polylines with a gap smaller than this value	Unlimited
Selected layers only	Apply to selected layers instead of all	Off

How It Works

For each open polyline (where the first and last vertices don't coincide):

1. If the gap between endpoints is within the maximum gap tolerance, a closing segment is added
2. If the gap exceeds the tolerance, the polyline is left open

Technical Notes

• Use the maximum gap option to avoid closing intentionally open paths
• This tool does not merge separate polylines — use Join Polylines for that
• Run Highlight Broken Polylines first to identify problem areas