
lc = 0.3 ;
zmin = -0.5;

Point(1) = {0,0,zmin,lc};
Point(2) = {1,0,zmin,lc};
Point(3) = {1,1,zmin,lc};
Point(4) = {-1,1,zmin,lc};
Point(5) = {-1,-1,zmin,lc};
Point(6) = {0,-1,zmin,lc};
Line(1) = {1,2};
Line(2) = {2,3};
Line(3) = {3,4};
Line(4) = {4,5};
Line(5) = {5,6};
Line(6) = {6,1};
Line Loop(7) = {2,3,4,5,6,1};
Plane Surface(8) = {7};

Extrude Surface {8, {0,0,1}};
Physical Volume(1) = 1 ;
