It is possible and educational to squeeze a bit of oil from the peel of an orange that may otherwise be thrown away. This would be equivelant to the press method of extraction.

The steam extraction method can be roughly replicated by boiling peels in water in a pot with lid. The oil will then form and seperate from the water.

Since the vast majority of this fine natural citrus oil is a by-product of the favorite squeezed orange juice, it may be easier to simply purchase a bulk bottle online. We are starting to see self juicing machines in grocery stores in the Bay area of Northern California- perhaps you could ask the management for the large amount of discarded peels that are most likely thrown away.