@okh

(...) you will need to add a (circular) SVG cutout path to the object with the Furniture Library Editor

I must admit: I never bothered to even try using the Furniture Library Editor. I thought it was for editing or creating a furniture library ( as the name indicates), not for editing single furniture. I had already tried the textures library editor, and found that it could handle a too small number of textures for my use, and imagined ( obviously in error) that the Furniture library editor was a similar program, therefore of little value to me.
I will surely change my mind now.

And, thank you [:)]