  We present simulations of a 3-d percolation model studied recently by K.J.
Schrenk et al. [Phys. Rev. Lett. 116, 055701 (2016)], obtained with a new and
more efficient algorithm. They confirm most of their results in spite of larger
systems and higher statistics used in the present paper, but we also find
indications that the results do not yet represent the true asymptotic behavior.
The model is obtained by replacing the isotropic holes in ordinary Bernoulli
percolation by randomly placed and oriented cylinders, with the constraint that
the cylinders are parallel to one of the three coordinate axes. We also
speculate on possible generalizations.
