//Merge "io1-pe-203.step" ;// First trial Doing this does not allow to define the volume with these surfaces as a hole

Merge "piece.stl" ;        //second trial, now the volume can be defined without a problem ( lines37,38) , but 3D meshing does not work.
lbox=200;
zbox=200;
lc=1;

Point(101) = {lbox,lbox,-zbox,lc};
Point(102) = {lbox,-lbox,-zbox,lc};
Point(103) = {-lbox,lbox,-zbox,lc};
Point(104) = {-lbox,-lbox,-zbox,lc};
Point(105) = {lbox,lbox,zbox,lc};
Point(106) = {lbox,-lbox,zbox,lc};
Point(107) = {-lbox,lbox,zbox,lc};
Point(108) = {-lbox,-lbox,zbox,lc};

Line(101) = {107,103};
Line(102) = {107,105};
Line(103) = {105,101};
Line(104) = {101,103};
Line(105) = {103,104};
Line(106) = {104,108};
Line(107) = {108,107};
Line(108) = {108,106};
Line(109) = {106,102};
Line(110) = {102,104};
Line(111) = {102,101};
Line(112) = {106,105};
Line Loop(113) = {105,106,107,101};		Plane Surface(114) = {113};
Line Loop(115) = {110,-105,-104,-111};	Plane Surface(116) = {115};
Line Loop(117) = {107,102,-112,-108};	Plane Surface(118) = {117};
Line Loop(119) = {111,-103,-112,109};	Plane Surface(120) = {119};
Line Loop(121) = {104,-101,102,103};	Plane Surface(122) = {121};
Line Loop(123) = {110,106,108,109};		Plane Surface(124) = {123};

Surface Loop(125) = {122,116,-124,114,-118,120};
Surface Loop(126) = {1};
Volume(127) = {125,126};
