We show that the optical binding between dielectric particles through millimeter wave propagation at 30-50 GHz having bulk mixture of two dielectric bodies at different sizes. We suppose the dielectric particles having dimensionless than the wavelength of the interacting light under millimeter wave propagation. An optimum increase in binding energy was noted for all cases. This study further indicates the suitability of this technique for construction of two or three-dimensional arrangement of objects. The observed dependence of the separation of optically bond particles on millimeter wave propagation is in good agreement with earliest theoretical predictions.