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Sketching · Lesson 3: Editing a sketch

Trim, sketch fillets and chamfers, mirror, convert and offset, contours.

Lesson goal

Build complex profiles quickly by editing and reusing existing geometry.

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5 videos

✎

1 exercise

Beginner

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Prerequisite: Lesson 2

1. Watch the videos

Dassault Systèmes videos hosted on MySolidWorks: they open in a new tab and a free account is enough. Watch them in order.

Sketch: TrimmingVideo 1▶Sketch: TrimmingRemove unwanted segments by proximity or at intersections.In French↗ Sketch Fillets and ChamfersVideo 2▶Sketch Fillets and ChamfersRound or chamfer the corners of a profile.In French↗ Sketch MirrorVideo 3▶Sketch MirrorMirror entities, dynamically or after the fact.In French↗ Sketch: Convert and Offset EntitiesVideo 4▶Sketch: Convert and Offset EntitiesReuse model edges and create parallel contours.In French↗ Sketch ContoursVideo 5▶Sketch ContoursSelect a specific contour in a sketch that contains several.In French↗

2. Key takeaways

1

Trim in Power Trim mode: drag the mouse across the segments to remove.

2

Dynamic Mirror: you draw half of the profile, the other half follows.

3

Convert Entities reuses an existing edge and stays linked to it: if the part changes, the sketch follows.

4

Contours let you use the same sketch for several features.

Tip

Use Offset Entities for a wall of constant thickness: a single dimension drives the thickness of the whole contour.

3. Do the exercise

Sketch the profile of a handle:

  • draw half of the contour and mirror it
  • add 5 mm fillets in the corners
  • offset the contour 3 mm inwards
✓To check: Change the offset to 4 mm: the whole inner contour follows in a single edit.

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