Hello everyone,
I'm on a metal chassis design.
I look for and I can't find how to make a diagonal symmetry of a boss.
Thank you in advance for your answer
A 180° circular repetition might do the trick.
Otherwise double symmetry and delete the existing functions, but that's not great.
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Thank you.
I must be precise on this subject, because this project must be well balanced.
Hello
otherwise to be symmetrical with respect to a plane (or a face)
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Hello;
If possible, screenshots of the chassis could help us get a better idea of which solution to consider...
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Hello
It's quite contradictory to the fact of making a symmetry.
In a rather general way, if you have to look for a " hack " to make a function, I don't see how you can bet on a precision afterwards 
we would need the part to make tests
At the same time, symmetry is inherently balanced... It is impossible to make a more precise balance.
And there is no shortage of ways to symmetrize in SW.
… Not so sure... we're talking about Solidworks here. Real symmetry is not his strong suit. 
And we still don't know what to work on @Pascal_bospac (mechanically welded, part, assembly, a bit of both?)
For topological symmetry, you have to symmetrize the bodies, not the sketches. There the polygons will be symmetrical.
According to his avatar I would say mechanically welded
But I know experts in precision and tinkering, if you want I'll give the contacts 
More seriously, in 3D, I avoid symmetry as much as possible. But when it's the only solution. The different mirror options put me in the wrong two or three times. by changing following an update.
I find a solution of the 180 rotation type when possible
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