Join Polylines

Merges separate polyline segments that share endpoints into continuous polylines.

When to Use

• After importing fragmented geometry (common with DXF files)
• When many short line segments should be a single polyline
• Before repair or boolean operations

Options

Option	Description	Default
Tolerance	Maximum distance between endpoints to consider them connected	0.001
Selected layers only	Apply to selected layers instead of all	Off

How It Works

1. Scans all polylines for pairs of endpoints within the tolerance distance
2. Joins matching polyline pairs into a single continuous polyline
3. Repeats until no more joins are possible

Technical Notes

• Joining is order-dependent — polylines are reversed if needed to form a continuous path
• The tolerance should be small enough to avoid joining unrelated geometry
• This tool reduces vertex count and simplifies subsequent operations