[Gmsh] Problem extruding surfaces.

[Billy Araujo]

I have the following geometry and I can't seem to extrude the surfaces.

lc = 0.004;

Point(1) = { 0.00, 0.01, 0.00, lc};
Point(2) = {-0.04, 0.01, 0.00, lc};
Point(3) = {-0.04,-0.01, 0.00, lc};
Point(4) = { 0.00,-0.01, 0.00, lc};
Point(5) = { 0.00, 0.05, 0.00, lc};
Point(6) = { 0.00,-0.05, 0.00, lc};
Point(7) = { 0.15, 0.05, 0.00, lc};
Point(8) = { 0.15,-0.05, 0.00, lc};
Point(9) = { 0.15, 0.01, 0.00, lc};
Point(10)= { 0.15,-0.01, 0.00, lc};

Line(1) = {1,4};
Line(2) = {4,3};
Line(3) = {3,2};
Line(4) = {2,1};
Line(5) = {1,5};
Line(6) = {5,7};
Line(7) = {7,9};
Line(8) = {9,10};
Line(9) = {10,8};
Line(10) = {8,6};
Line(11) = {6,4};
Line(12) = {4,10};
Line(13) = {9,1};

Transfinite Line {5,11,7,9} = 8+1 Using Progression 1;
Transfinite Line {1,3,8} = 4+1 Using Progression 1;
Transfinite Line {2,4} = 8+1 Using Progression 1;
Transfinite Line {6,10,12,13} = 30+1 Using Progression 1;

Line Loop(14) = {4,1,2,3};
Plane Surface(15) = {14};
Line Loop(16) = {5,6,7,13};
Plane Surface(17) = {16};
Line Loop(18) = {12,-8,13,1};
Plane Surface(19) = {18};
Line Loop(20) = {9,10,11,12};
Plane Surface(21) = {20};

Transfinite Surface {17} = {1,5,7,9};
Transfinite Surface {19} = {1,9,10,4};
Transfinite Surface {21} = {4,10,8,6};
Transfinite Surface {15} = {4,3,2,1};
Recombine Surface {17,19,21,15};

Extrude {0,0,0.002} {
  Surface{17,19,21,15};
}

The extrusion doesn't give an error message but the geoemtry is damaged.

Billy.