How to Add Explode Lines in SOLIDWORKS

Explode lines show how parts move away from each other in an exploded assembly view. They help readers understand assembly order, component relationships, and where fasteners or parts belong. In SOLIDWORKS, explode lines are usually added after the exploded view is created.

Create or open an exploded view

Explode lines need an exploded view to reference. Open the assembly and either create a new exploded view or edit an existing one. Move components into clear positions before adding lines, because the line layout depends on the exploded positions.

If components are too close together, the lines will be hard to read. If they are too far apart, the drawing may become oversized. Adjust the exploded view first, then add lines after the component locations feel clear.

Use Explode Line Sketch

1. Open the assembly exploded view.
2. Go to Insert > Explode Line Sketch.
3. Select the points, edges, or components to connect.
4. Add route lines between related parts.
5. Adjust the line path for readability.
6. Exit the explode line sketch when finished.

Use Auto Route when appropriate

Auto Route can create explode lines quickly, especially for simple exploded views. Review the result carefully because automatic lines may not always follow the clearest path. For important documentation, manually adjust lines that overlap components or make the view harder to read.

Manual routes are often better for complex assemblies. They let you choose connection points that match the intended assembly path instead of relying on automatic selections.

Keep the lines readable

Explode lines should guide the eye, not clutter the view. Avoid crossing too many lines, running lines through unrelated parts, or creating routes that are hard to follow. If the exploded view is crowded, move components farther apart or create a simpler view.

Use consistent line style and spacing where possible. A clean exploded view helps someone understand component order without needing extra explanation.

Show explode lines in drawings

After creating the explode line sketch, open the drawing and use the exploded configuration or exploded view. Confirm that the explode lines are visible and that the drawing view scale makes them readable. If lines are missing, check the view settings and assembly exploded view.

If the drawing uses multiple exploded views, label them clearly or use separate sheets. This prevents a crowded drawing from mixing several assembly steps into one confusing view.

Troubleshooting

If explode lines do not appear, make sure the explode line sketch is not hidden and that the drawing view is using the correct exploded state. If lines point to the wrong location, edit the explode line sketch and reselect the correct references.

Explode lines are part of the communication, not just decoration. Keep them simple, check them in the final drawing, and make sure they support the actual assembly process.

Before release, export the drawing to PDF and inspect the line visibility. Thin lines can disappear or become hard to read after export if the view is too dense.

If the exploded view is used for service instructions, ask whether the line path matches the real removal direction. A clear technical line should support the actual way the part comes apart.