Dried and Roasted Copra pieces are now fed into an expeller with screw press for mechanical crushing under high pressure. Oil squeezes out of copra during this process leaving the fibre out. Crushing is employed in 2 stages where 1st crushed copra is again crushed for the 2nd time to recover maximum oil. The left out Oil cake will still have 8% oil. Extracting oil beyond this level is not economical with mechanical crushing. Solvent extraction method will have to be employed beyond this stage.