Minimum gauge for making a wax model

Hi all,

Does anyone know what the minimum gauge of stainless steel wire is
needed to be molded and in order to produce wax injections and
sterling silver castings? I go to Taba in NYC. I could ask them but
wonder if anyone has their own experience and knowledge re this
question. I know that the minimum gauge for wax sheet is 1mm, but do
not know about wax wire or metal wire. This is to be round wire grid
with 1/4" square holes between each wire.