How to Use Offset in SolidWorks Sketch: Step-by-Step Guide
In SolidWorks sketch, use the
Offset Entities tool to create a copy of a selected sketch entity at a specified distance. Select the entity, click Offset Entities, enter the offset distance, and choose the direction to create the offset curve or shape.Syntax
The Offset Entities tool in SolidWorks allows you to create a new sketch entity parallel to an existing one at a specified distance.
Select Entity: Choose the sketch line, arc, or curve to offset.Offset Distance: Enter the distance to offset the entity.Direction: Choose inside or outside direction for the offset.Create: Confirm to generate the offset entity.
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Offset Entities: Select entity -> Enter offset distance -> Choose direction -> Click OK
Example
This example shows how to offset a rectangle sketch by 5 mm outward to create a larger rectangle.
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1. Draw a rectangle in the sketch.<br>2. Select the rectangle edges.<br>3. Click on <code>Offset Entities</code> in the Sketch toolbar.<br>4. Enter <code>5 mm</code> as the offset distance.<br>5. Choose the <code>Outside</code> direction.<br>6. Click <code>OK</code> to create the offset rectangle.
Output
A new rectangle is created 5 mm outside the original rectangle edges, maintaining the same shape but larger size.
Common Pitfalls
- Not selecting the correct entity before using
Offset Entitiescauses no offset to be created. - Using a negative offset distance unintentionally can create an offset inside instead of outside.
- Trying to offset complex or self-intersecting sketches may cause errors or unexpected shapes.
- For closed shapes, ensure the offset distance is not too large to avoid overlapping or invalid geometry.
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Wrong: Select no entity -> Click Offset Entities -> No result Right: Select entity -> Click Offset Entities -> Enter distance -> Confirm
Quick Reference
| Step | Action | Tip |
|---|---|---|
| 1 | Select sketch entity | Choose lines, arcs, or curves to offset |
| 2 | Open Offset Entities tool | Found in Sketch toolbar or right-click menu |
| 3 | Enter offset distance | Positive for outside, negative for inside |
| 4 | Choose direction | Inside or outside relative to original entity |
| 5 | Confirm offset | Click OK to create new offset entity |
Key Takeaways
Use the Offset Entities tool to create parallel sketch entities at a set distance.
Always select the correct sketch entity before applying offset.
Positive distances offset outside; negative distances offset inside.
Avoid large offsets on closed shapes to prevent invalid geometry.
Offset Entities works on lines, arcs, and curves within sketches.