How to mirror 2D geometry using an axis instead of a construction line?

[karl]

Supposedly this ability was added last year (according to forum posts), but I can't figure out how to do it, nor can I find any tutorials on it.  Does it actually exist?  If so, how does it work?  Thanks.

[g-andresen]

Hi,

works both:

Axis from origin and from construction (register)

günther

[karl]

Can you show/explain how?  When I try to select an axis, Fusion won't let me.

[jeff_strater]

sketch (2D) mirror only allows you to mirror about a line in the sketch.  You are correct, you cannot select a work axis as a mirror line, you must first project that axis into the sketch.  You can, however, mirror about a plane, if that plane is perpendicular to the sketch plane.

[jeff_strater · Accepted solution]

hmm... screencast didn't go through...

https://knowledge.autodesk.com/community/screencast/db32c34b-4286-4bce-b4e5-eecec3ebf646 

[karl]

Aah, I see. Select the appropriate plane in the Origin from the browser. Thanks.