Mirror a spline running through multiple planes

[cybromancy]

I have a spline running through multiple planes and am trying to mirror it. The 'sketch mirror' command does not allow it to be selected for mirroring.

How can I mirror this spline?

Thanks for your time

[laughingcreek]

you can't mirror 3d sketch geometry.  not that you would want to mirror a fit point spline anyway, they are notoriously unruly when mirrored (ie buggy, not to be trusted).

extrude a surface off it (or create a ruled surface) and mirror the surface.  then use the edge for whatever operation you where planning.

[TheCADWhisperer]

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

Projected Intersection 

[cybromancy]

@laughingcreek 

Hey thanks for the reply, a ruled surface allowed the spline to be mirrored.

How would someone go about accessing the mirrored body geometry, I am a bit new at this.

The web searching I did said to make a copy of the mirror so the mirrored body is no longer 'connected', then create a new sketch so that the bodies are visible as the new sketch is newer in the timeline.

It seems so simple, the geometry of the line exists on the body in fusion.

I just want to copy that geometry to a new line in a sketch, seems so straight forward, what am I missing?

See image below as I am just trying to make a simple pipe run along the lines, but cannot highlight the side of the body.

Thanks for your time.

[cybromancy]

@TheCADWhisperer 

Attached is the .fdz file for trying to mirror a spline in 3d space.

[laughingcreek]

You typically want to avoid mirroring sketch entities.  mirror soilds-

[cybromancy]

@laughingcreek 

Hey thanks so much for the help : )

How would I smooth out the bottom connection, into a smooth line, see image.

On closer inspection its not even connected. Would it be wield or repair or stitch? In your file it is a single body.

[laughingcreek]

If you want to have the mitered kink, but properly connected, then you might try going thru my timeline and observing what I did. If you want the transition across the mirror plane smooth, then make sure the spline is normal to the mirror plane where it crosses.  (Probably with a horizontal constraint on the tangent control line).