Slab command upgrade?

starting from a polyline in 3d space → want to achieve “walls” as Solid, closed polysrf. I recall, wrongly I realized, that slab command could do that, but it can’t as it doesn’t solve intersections in 3D. same rhino 9. maybe rhino10?

Is there any other command or way to achieve this?

Slab is basically an Offset-and-Extrude operation. The problem is that Offset is 2D and often fails on 3D polylines and the like.

One workaround that may help is to draw a line that represents the wall thickness at one end perpendicular to the wall centerline polyline. Then Sweep1 the line along the centerline, and extrude the resulting polysurface to the wall height.

thank you! yes I thought about a sweeping workaround…
hope to see something alike in future rhino versions then!