How to create a coarser mesh

mesh
1

Hi Guys

Please refer to the attached image and the associated code.
The cube is approximately 15x13x10mm. How can I make the mesh coarser?

I intend on using the mesh as a basis for packing spheres to create custom particles for DEM simulations. The current mesh creates far to many spheres to make an efficient simulation.

Capture
Capture1532×953 105 KB

def create_msh():
    # Initialize Gmsh
    gmsh.initialize()
    # Import the STEP file
    gmsh.model.occ.importShapes(File_Location_STP)
    gmsh.model.occ.synchronize()


    gmsh.option.setNumber('Mesh.MeshSizeMin', 1000)
    gmsh.option.setNumber('Mesh.MeshSizeMax', 2000)

    gmsh.model.mesh.recombine()
    gmsh.option.setNumber("Mesh.Algorithm3D", 1)  
    gmsh.option.setNumber("Mesh.RecombineAll", 1)
    gmsh.option.setNumber("Mesh.SubdivisionAlgorithm", 2)
    gmsh.option.setNumber("Mesh.ElementOrder",1)
    gmsh.option.setNumber('Mesh.Recombine3DLevel', 2) 
    gmsh.option.setNumber("Mesh.RecombinationAlgorithm", 1) 
    # gmsh.option.setNumber("Mesh.Hexahedra", 1) 


    gmsh.option.setNumber("Mesh.SubdivisionAlgorithm", 2)  
    # gmsh.model.mesh.refine()
    gmsh.model.mesh.generate(3)

    gmsh.option.setNumber("Mesh.MshFileVersion",2.2) 
    gmsh.write(File_Location)
    if '-nopopup' not in sys.argv:
        gmsh.fltk.run()
    gmsh.finalize()
2

Please don’t test my patience, you’ve already been told that these questions are not suitable here.