I want to make a mold to pour concrete pieces for a garden border. I want to put a pattern on the face of the pieces. Of course, my CarveWright came to mind for the face portion of the mold.

Consequently, the carving needs to be "inverse". I just gave it a try with a pattern, set the depth to "0", and the height to a negative value. According to the image on screen, this seemed to do the job.

Has anyone tried this? Does this seem like the right approach?

I've learned it's better to ask this forum before, rather than trust my poor judgment. Saves a little wood, time, and an lot of frustration!