Autodesk Inventor Users

If you want a mirrored part, to place in the assembly my advise is to use the derive function and in doing so mirror the geometry about the suitable workplane. The place the new component and use the mirror constraints to position the part. The new derived part is by default linked to the original so it will change to reflect changes, but of course this link be suppressed or even removed.

IPART for multiple instances:

• If you need to create multiple mirrored instances of the same part in an assembly, you would typically create an "IPART" file which can then be placed in the assembly multiple times with different orientations. 

To create a mirror in an iPart (In-context Part) within Autodesk Inventor, you need to access the "Mirror" command within the sketch environment, select the features or geometry you want to mirror, and then choose the appropriate mirror plane to reflect the geometry across; essentially, you're mirroring the sketch that will be used to create the iPart features across the chosen plane. 

Key steps:

• Open your iPart file: Navigate to the iPart file you want to modify in Inventor. 
• Access the sketch environment: Open the sketch where you want to create the mirrored feature. 
• Select features to mirror: Choose the specific lines, curves, or other sketch geometry you want to mirror. 
• Activate the "Mirror" command: Go to the "Sketch" tab on the ribbon and select the "Mirror" command. 
• Select the mirror plane: In the dialog box that appears, choose the plane you want to mirror across (e.g., XY, YZ, or ZX plane). 
• Preview and confirm: You'll see a preview of the mirrored geometry; if it looks correct, click "OK" to apply the mirror. 

Important points to consider:

• Creating a dedicated mirror plane:
• If you need more control, you can create a custom plane in your sketch specifically for mirroring. 
• Mirroring multiple features:
• You can select multiple features to mirror simultaneously by holding down the Ctrl key while selecting them. 
• Updating the iPart:
• Once you've mirrored the desired geometry within the sketch, save the iPart to ensure the changes are reflected in any instances using that iPart. 

https://www.youtube.com/watch?v=hSPIrJVG050

Not the best video, but it does cover iParts.

When you use the Assembly "Mirro Pattern" feature you tick on the dots and choose to Copy (green) or Reuse (yellow) the components. But remember the mirro pattern is static. This assembly mirror feature will be updated in the new Inventor 2026 version released soon to work much better.

https://grabcad.com/library/light-version-of-the-classic-door-1