You can't make hemp oil from buds. The only oil you can make from buds would be medicinal in which case you can use butter, oil, ghee, or glycerine; & is very beyond the scope of what I am writing. If you have a seed strain of C. Sativa (I legally & scientificlly have to use that designation) you can press the seeds like any other nut, except that this oil from the nuts besides being insanely high in Omega fatty acids, the oil makes a wonderful fuel to the point of being an Ethanol level plant.