  Using numerical analytic continuation, we compute the Zeta function for the
Casimir Effect for circular geometries in 2+1 dimensions. After subtraction of
the simple pole of the zeta function, essentially MS renormalization, we find
the Casimir force is repulsive. Implications for the stability of 2+1
dimensional domain walls and Axion membranes in 3+1 dimensions are discussed,
especially in the context of strongly coupled underlying physics.
