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When I model animals or humanoid species, mostly I use metaballs to create the base mass of the mesh. I love metaballs, it's easy to create a good proxy mesh from them. But I don't know how to keep them symmetrical. Is there a way to do this, similar to Mirror modifier or the symmetry mode of sculpting mode? For example a python script that can maintain symmetry of certain object-pairs while modeling.

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    $\begingroup$ You can try to sketch by duplicating and scaling icospheres in edit mode and add Remesh modifier and Mirror modifier ... It works in a similar way (⁠•⁠‿⁠•⁠) $\endgroup$
    – vklidu
    Commented Sep 7, 2022 at 21:15
  • $\begingroup$ This is a workaround, but very good idea and works surpisingly well! $\endgroup$
    – Denatural
    Commented Sep 7, 2022 at 22:05
  • $\begingroup$ The main problem with it is that the element tension is not modifiable, negative field is not possible, and if I increment voxel density, the surface becomes sharp. $\endgroup$
    – Denatural
    Commented Sep 7, 2022 at 22:12

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As mentioned - not possible without some python ...

Some way can be to ...

  • model one side
  • Duplicate without "mother" object (an object without a number .00x)
  • with duplicated objects still selected, add to active one Constraints > Copy Location > X and Invert X
  • choose operator Copy modifiers to Selected (repeat same for Copy Scale constraint)

The tedious part here is to set manually target for each objet.

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  • $\begingroup$ This seems to be the best technique without scripting. And if I duplicate a symmetrised object together with its pair, the copies will keep the ther constrain relations. I tried it, works very good! $\endgroup$
    – Denatural
    Commented Sep 22, 2022 at 19:07
  • $\begingroup$ Nice. Hopefully someone makes an addon for this, or even Blender gets builtin metaball mirroring. $\endgroup$
    – Henrik
    Commented Nov 10, 2023 at 2:54

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