  With the deconstruction technique, the geometric information of a torus can
be encoded in a sequence of orbifolds. By studying the Matrix Theory on these
orbifolds as quiver mechanics, we present a formulation that (de)constructs the
torus of {\em generic shape} on which Matrix Theory is ``compactified''. The
continuum limit of the quiver mechanics gives rise to a $(1+2)$-dimensional
SYM. A hidden (fourth) dimension, that was introduced before in the Matrix
Theory literature to argue for the electric-magnetic duality, can be easily
identified in our formalism. We construct membrane wrapping states rigorously
in terms of Dunford calculus in the context of matrix regularization. Unwanted
degeneracy in the spectrum of the wrapping states is eliminated by using
$SL(2,\integer)$ symmetry and the relations to the FD-string bound states. The
dual IIB circle emerges in the continuum limit, constituting a critical
evidence for IIB/M duality.
