**Wieringa roof** is a surface made from Penrose tiling by rising some vertices in third dimension to make all rhombi congruent. SketchUp upload test version of [earlier model](https://skfb.ly/ESVy). In fact, the scale along Z axis is not correct, it became quite clear looking at [Wieringa crystal](https://skfb.ly/Rq6X). See a [model](https://skfb.ly/RsTn) with proper scale.