  We examine the conjectured asymptotic shape of the three dimensional corner
growth model [Olejarz et. al.,PRL, 108, 016102 (2012)] by mapping the model
onto a restricted solid on solid model on a triangular lattice. By choosing
appropriate boundary conditions, we are able to obtain high precision numerical
results for the growth velocity using Monte Carlo simulations. We find that the
numerical results are not consistent with the conjecture.
