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- Dabs of Rosin.
Getting the right size prepress makes all the difference in a good pressing. I built my own 1.25 x 1.75 inch. It holds a little over 3 grams of bud for my 3x4 plates. It leaves about 3/8 inch all around the puck on the plates when pressed. I do not use bags for flower. I have found that with the right prepress they just are not needed. I was wasting to much rosin stuck in the bags and if you press too hard to get it out it just blows the bag. It is also time consuming to load them. If I plan to use the rosin for chocolate bars I press @ 210°F/2.5 minutes for the best yield; usually between 16% to 24% depending on the strain. Then if I want to make vape oil out of the rosin I press @ 185°F/5 minutes. I get a better terpene profile with the lower temperature but at a cost of about 10% on the Yield compared to pressing at the higher temperature.