Complex Curves in 3D with Curviloft

Extensions
1

I looked for the Fredo6 Curviloft extension in the Warehouse, but cannot locate it? I’m trying to produce close the top of this box with a complex curve.Prop Block.skp (75.6 KB)

Is it still available?

2

Fredo’s plugins have always been hosted at Sketchucation.

3

Thanks!