Learn SOLIDWORKS-API with Real Code Examples

Updated Nov 27, 2025

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Code Sample Descriptions

Create a New Part Document

Dim swApp As SldWorks.SldWorks
Dim swPart As ModelDoc2
Set swApp = Application.SldWorks
Set swPart = swApp.NewDocument("C:\ProgramData\SolidWorks\SOLIDWORKS 2023\templates\Part.prtdot", 0, 0, 0)

Opens a new part document in SolidWorks via API.

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Add a Sketch on Front Plane

Dim swSketchMgr As SketchManager
Set swSketchMgr = swPart.SketchManager
swPart.Extension.SelectByID2 "Front Plane", "PLANE", 0, 0, 0, False, 0, Nothing, 0
swSketchMgr.InsertSketch True

Creates a new sketch on the front plane.

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Draw a Line in Sketch

Dim line As SketchSegment
Set line = swSketchMgr.CreateLine(0, 0, 0, 0.1, 0.1, 0)

Draws a line between two points in the active sketch.

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Draw a Circle in Sketch

Dim circle As SketchSegment
Set circle = swSketchMgr.CreateCircleByRadius(0, 0, 0, 0.05)

Creates a circle at a specified center with a given radius.

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Extrude a Sketch

swPart.FeatureManager.FeatureExtrusion2 True, False, False, 0, 0, 0.1, 0, False, False, False, False, 0, 0, False, False, False, False, True, False, False

Extrudes the selected sketch to create a 3D solid.

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Create a Rectangle Sketch

Dim p1, p2, p3, p4 As SketchSegment
Set p1 = swSketchMgr.CreateLine(0, 0, 0, 0.1, 0, 0)
Set p2 = swSketchMgr.CreateLine(0.1, 0, 0, 0.1, 0.05, 0)
Set p3 = swSketchMgr.CreateLine(0.1, 0.05, 0, 0, 0.05, 0)
Set p4 = swSketchMgr.CreateLine(0, 0.05, 0, 0, 0, 0)

Draws a rectangle using four lines in a sketch.

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Apply Fillet to Edge

swPart.Extension.SelectByID2 "Edge1", "EDGE", 0, 0, 0, False, 0, Nothing, 0
swPart.FeatureManager.InsertFeatureFillet 5, 0.01, 0, 0, 0, 0, 0, 0

Applies a fillet to a selected edge in a part.

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Add Material to Part

swPart.SetMaterialPropertyName2 "Default", "Steel"

Assigns a material to the active part document.

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Create a Circular Pattern

swPart.Extension.SelectByID2 "Boss-Extrude1", "BODYFEATURE", 0, 0, 0, False, 0, Nothing, 0
swPart.Extension.SelectByID2 "Axis1", "AXIS", 0, 0, 0, True, 0, Nothing, 0
swPart.FeatureManager.FeatureCircularPattern3 6, 360, False, True, True, True, False, 0, 0, False

Creates a circular pattern of a feature around an axis.

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Save Part Document

swPart.SaveAs "C:\Users\Public\Documents\SolidWorks\part1.sldprt"

Saves the active part document to a specified path.

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Code Sample Descriptions

Create a New Part Document

Dim swApp As SldWorks.SldWorks
Dim swPart As ModelDoc2
Set swApp = Application.SldWorks
Set swPart = swApp.NewDocument("C:\ProgramData\SolidWorks\SOLIDWORKS 2023\templates\Part.prtdot", 0, 0, 0)

Opens a new part document in SolidWorks via API.

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Add a Sketch on Front Plane

Dim swSketchMgr As SketchManager
Set swSketchMgr = swPart.SketchManager
swPart.Extension.SelectByID2 "Front Plane", "PLANE", 0, 0, 0, False, 0, Nothing, 0
swSketchMgr.InsertSketch True

Creates a new sketch on the front plane.

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Draw a Line in Sketch

Dim line As SketchSegment
Set line = swSketchMgr.CreateLine(0, 0, 0, 0.1, 0.1, 0)

Draws a line between two points in the active sketch.

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Draw a Circle in Sketch

Dim circle As SketchSegment
Set circle = swSketchMgr.CreateCircleByRadius(0, 0, 0, 0.05)

Creates a circle at a specified center with a given radius.

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Extrude a Sketch

swPart.FeatureManager.FeatureExtrusion2 True, False, False, 0, 0, 0.1, 0, False, False, False, False, 0, 0, False, False, False, False, True, False, False

Extrudes the selected sketch to create a 3D solid.

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Create a Rectangle Sketch

Dim p1, p2, p3, p4 As SketchSegment
Set p1 = swSketchMgr.CreateLine(0, 0, 0, 0.1, 0, 0)
Set p2 = swSketchMgr.CreateLine(0.1, 0, 0, 0.1, 0.05, 0)
Set p3 = swSketchMgr.CreateLine(0.1, 0.05, 0, 0, 0.05, 0)
Set p4 = swSketchMgr.CreateLine(0, 0.05, 0, 0, 0, 0)

Draws a rectangle using four lines in a sketch.

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Apply Fillet to Edge

swPart.Extension.SelectByID2 "Edge1", "EDGE", 0, 0, 0, False, 0, Nothing, 0
swPart.FeatureManager.InsertFeatureFillet 5, 0.01, 0, 0, 0, 0, 0, 0

Applies a fillet to a selected edge in a part.

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Add Material to Part

swPart.SetMaterialPropertyName2 "Default", "Steel"

Assigns a material to the active part document.

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Create a Circular Pattern

swPart.Extension.SelectByID2 "Boss-Extrude1", "BODYFEATURE", 0, 0, 0, False, 0, Nothing, 0
swPart.Extension.SelectByID2 "Axis1", "AXIS", 0, 0, 0, True, 0, Nothing, 0
swPart.FeatureManager.FeatureCircularPattern3 6, 360, False, True, True, True, False, 0, 0, False

Creates a circular pattern of a feature around an axis.

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Save Part Document

swPart.SaveAs "C:\Users\Public\Documents\SolidWorks\part1.sldprt"

Saves the active part document to a specified path.

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