Mold of topo

[Rudbeckia]

Hello again

I need to make a mold of a site in SU on a 3d printer

Meaning I want the 3d printer to print the underside of the topography surface

Put another way, I need to add a "terrain skirt" but in the opposite direction from what the plugin naturally does

Any thoughts on how you would go about making a terrain surface "thick" for the 3d printer but in the opposite way?

[Box]

Flip the Terrain on the blue axis then give it a skirt.

[fredo6]

@rudbeckia

You can try with JoinPushPull, Vector mode with the option Project to plane, as shown here.

Otherwise, enclose the terrain in a big box and Intersect / cleanup

Fredo