  In this work, an approach to generate radial interfaces is presented. A
radial network recursively obtained is used to implement discrete model rules
designed originally for the investigation in flat substrates. In order to test
the proposed scheme, we have used the restricted solid-on-solid and etching
models. The results indicate the KPZ conjecture is fully verified. Besides, a
very good agreement between the interface radius fluctuation distribution and
the GUE one was observed. The evolution of the radius agrees very well with the
generalized conjecture, and the two-point correlation function exhibits a very
good agreement with the covariance of Airy$_2$ process. So, this approach can
be used to investigate radial interfaces evolution for others universality
classes.
