Hi, You can get it by
h = RegionPlot3D[(x^2 + 9/4 y^2 + z^2 - 1)^3 - x^2 z^3 - 9/(80) y^2 z^3 <= 0, {x, -2, 2}, {y, -2, 2}, {z, -2, 2}]; Export["f:\heart.stl", h]
and find it at your F disk.
