but the surfaces by definition do not have thickness, what do you want to do exactly?how to mirror surfaces with its thicknesses?
if you use copy specular feature you need to mirror both extrusion and add thickness. probably activating the smart option.then the problem is this: I create a surface with the command "extrusion surface" after which I give it a thickness.
when I go to make a "short copy of feature" reports the following error "unmodified part:change the feature input".
ps. I'm working with v17 version of if
Thank you for your answers.