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Match properties (eyedropper / syringe)
Shortcuts: E (capture source), Y (arm syringe) Toolbar: none — keyboard and the Match properties chip
Copy style properties from one entity and apply them to others. Works like a paint eyedropper: capture a source, arm the syringe, click targets.
Workflow
Step 1 — Capture source (E)
- Select an entity with matchable properties (wall, door, window, etc.).
- Press E — the source style is captured. A chip appears showing the source.
Step 2 — Arm syringe (Y)
- Press Y — the syringe is armed. Cursor becomes a crosshair.
Step 3 — Apply to targets
- Click each target entity — targets are queued (not selected).
- Press Enter to apply the captured style to all queued targets.
Or use the commit button on the Match properties chip panel.
Press Esc to disarm the syringe at any point.
What gets matched
| Entity | Properties copied |
|---|---|
| Wall | Thickness, material, structural flag |
| Door | Kind, width, height, swing direction |
| Window | Kind, width, height |
Style conflicts (e.g. matching a door style onto a wall) are rejected with a warning.
Scenario — fix a mis-typed wall thickness (9.0 × 7.5 m house)
You drew one interior wall at 0.23 m (exterior thickness) instead of 0.115 m. Rather than deleting and redrawing, use Match properties to copy the correct thickness from an adjacent interior wall.
- Select a correctly-drawn 0.115 m interior wall.
- Press E — the chip shows the interior wall type.
- Press Y — syringe armed.
- Click the mis-typed wall.
- Press Enter — the wall updates to 0.115 m.
One click per wall, no manual property editing. Useful when the same mistake was made on several walls.
See Precision input — Match properties does not require typed metric entry, but snapping helps you click the correct wall centerline.
Why nothing happened
| Symptom | Cause | Fix |
|---|---|---|
| E does nothing | No entity selected | Select an entity first, then press E |
| Y does nothing | No source captured yet | Press E on a selected entity first |
| Click does not queue a target | Syringe not armed | Press Y after E before clicking targets |
| "Style conflict" warning | Entity types are incompatible | Match only wall→wall or opening→same-kind opening |
Tips
- The chip shows the active source and pending target count — check it before pressing Enter to confirm you have the right source and correct targets queued.
- Esc disarms the syringe before other cancel actions. Press it first if the tool feels stuck.
Related
- Precision input — snapping to wall centerlines
- Select — select the source entity before capturing
- Plan workspace — full tool index