# https://github.com/mikedh/trimesh
v -0.02730000 -0.00422500 0.02730000
v 0.02730000 -0.00422500 0.02730000
v -0.02730000 -0.00422500 -0.02730000
v 0.02730000 -0.00422500 -0.02730000
vn 0.00000000 -1.00000000 -0.00000003
vn 0.00000000 -1.00000000 -0.00000003
vn 0.00000000 -1.00000000 -0.00000003
vn 0.00000000 -1.00000000 -0.00000003
f 1//1 3//3 4//4
f 1//1 4//4 2//2