leaching where salt crystals such as NaCl (common table salt) are put into a mold and polymer is poured over the salt, penetrating into all the small spaces left between the salt crystals. The polymer is hardened and then the salt is removed by dissolving it in a solvent (such as water or alcohol) which washes/leaches the salt out. Upon removal of the salt crystals all that remains is the hardened polymer with open holes/pores where the salt once was (see Fig. 1). A new fabrication technique under development at UWEB uses polymer foams called aphrons to create porous scaffolds.