Lineweight
The lineweight chip in the toolbar controls the stroke width assigned to every new entity you draw. Click it to open the picker dropdown.
Options
| Value | Meaning |
|---|---|
| From Layer | Entity inherits the lineweight defined on its layer. The actual width shown depends on the layer setting. |
| Default | Uses the application default width — rendered as a thin line (1 px). Does not override the layer setting in DXF. |
| 0.00 mm – 2.11 mm | An explicit fixed width. The entity carries this value regardless of its layer's lineweight. |
Standard DXF lineweight values are available: 0.00, 0.05, 0.09, 0.13, 0.15, 0.18, 0.20, 0.25, 0.30, 0.35, 0.40, 0.50, 0.53, 0.60, 0.70, 0.80, 0.90, 1.00, 1.06, 1.20, 1.40, 1.58, 2.00, and 2.11 mm.
How it applies
The selected lineweight is applied to every entity created after the change. It does not retroactively affect existing entities.
To change the lineweight of existing entities, select them and edit the Lineweight field in the properties panel, or use MatchProperties to copy it from another entity.
Rendering
Lineweights are rendered at a scale of 3.78 px per mm (96 dpi). A 0.25 mm line is approximately 1 px wide on screen; a 1.00 mm line is approximately 4 px. Very thin values (0.00 mm and negatives) are always rendered as at least 0.5 px so they remain visible at any zoom level.
DXF compatibility
Lineweight values are stored as integers in hundredths of a millimetre (e.g. 25 = 0.25 mm) in the DXF LWPOLYLINE, LINE, CIRCLE, and other entity records. From Layer is stored as -1 and Default as -3, matching the AutoCAD DXF specification. Files round-trip without loss in any DXF-compatible application.