Use the undocumented Extrusion option:
ContourPlot3D[x*z - y^2 == 0, {x, -1, 1}, {y, -1, 1}, {z, -1, 1},
Mesh -> None, Extrusion -> 0.1]
Or even better:
ParametricPlot3D[{x, -y^2, x y}, {x, -1, 1}, {y, -1, 1},
PlotStyle -> Thickness[0.1]]
Young
- 7.5k
- 1
- 22
- 46