Hi Michael,

Based on your previous suggestions, i wrote a little variant of your plugin, that supplies a minimal UI.
Its javascript code is not very elegant but it seems to work.

Using its UI it's now possible to choose the working plane and if or not apply the mirror command.
If the selected mirror axis is incongruous in relation to the working plane, the script will use a default axis for that particular working plane.

I tried to write a version that could show a preview before commit the results,
but without success.

I think the problem is that the entire process it's not made by a single factory command, but by multiple commands.

Could you please suggest an easy way to achieve this goal ?

Thank you and have a nice day !

Marco (mkdm).