Hi Brian,
"24. when creating symmetric constrain in sketcher,why there is need for center line,it should be select this and this and it's symmetric,same problem for mirror in sketcher.why do we need center line,and that center line won't even be datum,one that's used for mirror and symmetry. :Sigh: This is one of my pet peeves. I agree with you. Back in Wildfire 2.0, you could sketch symmetry WITHOUT the centerline. In Wildfire 3, they made the centerline for symmetry mandatory. I tried to bring this up in January at the TC meetings but got shot down by other members who did not remember the way it worked in Wildfire 2. This was frustrating. I'll try again to get support for this one."
I do not think that is possible in wildfire 2.0 also.