 
Mesh.RemeshParametrization=0;
Mesh.RemeshAlgorithm=1;

Mesh.CharacteristicLengthFactor=.25;

Mesh.Algorithm=5;
Mesh.Algorithm3D=1;

Mesh.Format=10;

Merge "cylinderSource.stl";
Merge "coneSource.stl";
Coherence Mesh;
RefineMesh;
CreateTopology;

Compound Surface(100)={1};
Physical Surface(101)={100};

Compound Surface(102)={2};
Physical Surface(103)={102};

Surface Loop(200) = {100,102};

Volume(300) = {200};
Physical Volume(400) = {300};