Dear Kwanters, The kwant.continuum.discretize helps transform a continuous k.p Hamiltonian to a tight-binding Hamiltonian. During this discretizing process, we can use the "grid" parameter to control the "mesh" of such a discretization. In the tutorial, I see that different "grid" result in different approximations of the tight-binding Hamiltonian with respect to the continuous Hamiltonian. See https://kwant-project.org/doc/1/tutorial/discretize My question is: which value of grid should we use during the discretizing process? Should we decrease the "grid" from a larger value to a smaller value, monitoring the band structure and conductance behavior, until the band structure and conductance behavior remain almost unchanged when further decreasing the "grid"? Thanks a lot for your answer.