Bulk metallic glasses (BMGs) are a new class of materials with attractive properties for structural applications, including very high strength and elasticity, and high corrosion resistance [5], [6] and [7]. With the exception of a new class of BMGs [8] and [9], no or very limited plasticity has been observed, which has limited BMG applications [7]. However, it was recognized that in small dimensions BMGs can show significant plasticity. Conner et al. [10] have shown that the plasticity of beams in bending increases significantly when the beam thickness is decreased below 1 mm. Also, it was observed that for the majority of BMGs the plastic zone shielding a crack tip is less than 1 mm [7]. These results suggest that an ideal geometry for BMG applications should be limited in at least one dimension to below 1 mm for the BMG to express its full potential properties.