Hi,
next round of learning Blender 
One question I encountered:
As soon as I apply smooth vertices from right click command the symmetry mode does not apply it to both sides. Before that moving points etc worked just fine?
Am I missing sth.? Thx!
Hi,
Maybe this is because your smooth applies only to faces you have selected?
1 Like
That symmetry only applies to transformations- location, rotation, and scale. It does not apply for operators such as smoothing. You’ll want to cut it in half and add a mirror modifier
1 Like
That means there is currently no nondestrucitve workflow in Blender? Some modleing Addons bring that right?
I think Mirror modifier is the best option out there to make what you want
Imagine for example a mesh with uvs layed out or vertex colors painted. If you use the mirror modfier you’d have to redo all uvs or colors becasue one side of the mesh is destroyed. That is not always a good solution
You could also do this with geometry nodes, or just select all the faces you want to smooth like @goorman said. Lots of ways to skins this particular cat 
that said, you should usually finish your modeling completely before doing anything with UVs or vertex colors.
1 Like
The mesh symmetry function (that with the icon on top of the 3d viewport) supports symmetry also for tools like smooth. If it does not you have already lost symmetry. Then you have to symmetrize before you can use it again.
3 Likes
Interesting, I learned something new today
1 Like
Oh, okay. Sorry if something wrong. That’s just how I would’ve done that in my own case
1 Like
That’s reminds me of the moment when I have randomly figured out that pressing CTRL+SHIFT+T on principled BSDF could help you to attach all of the textures at once in one click
2 Likes
Awesome!
Thank you! Losing symmetry might be a bug in that case? Symmetrize helps to reestablish the symmetry indeed.
1 Like
Not neccessarily a bug. It determines symmetry based on spatial position not topology. So having symmetry lost before can have quite some reasons. But yeah symmetrize is your friend here.
There should be a new topic called ‘looking for an easter eggs in Blender’ 