I use ice water extraction aka bubble hash even though bubble is a select grade of the most pristine. I usually pull bubble in the higher ranges of micron screen sizes unless dealing with those tiny tricks most Sativa genetics display. I have a small washing machine that I utilize most times not due to the mass I build of plant material with my perpetual.
The machine has to be ran just right due to the extra agitation but I can get just as much quality out of it as I can with the spoon and bucket technique. I never had any teachers once again. Just a few pointers were given and I dove right into this modernized art form in an attempt to master it as much as possible. I find this helped me excel in learning by trial and error. This then led me to the machine once I mastered the hand stir. I had to do the same with the washer, it took some time to perfect it without finding contamination from plant particulates in the sense of leaf material. I do not like Hash with foreign contaminants or plant matter in it even if it is from the plant being extracted at hand or machined hehe
I also have a few extra hands (Patients) when need be and this helps relieve me from the burden of always watching the washer as it likes to hop at times when unbalanced and it always sits next to my kitchen sink on the counter in order to use the sink and bubble bags even more efficiently then when in a bucket.
I have three sets of bubble bags, two hard sided ones and a deluxe set of all mesh and the later also has a 90mic bag for those sized trichomes as well but I tend to not get into the vastness of separating by microns in magnitude. I tend to know my material and trichome sizes fresh or dry, I like the later. This allows me to narrow down what two bags I will be using in an individual run. Usually its 70 mic and 25 on average due to the standard among the ladies here in their trichome development sizes.
I also prefer to use a dryer starting material and it is already well decarboxylated and this allows for a shorter turn around time when drying and curing. No need but to dry off any excess water and then it just gets better and better as it ages and is exposed to air turning the Indica side of my extracts into black hash balls that the old sailors here love and adore. The sat dom stuff gets grated and broken into a crystal like hash and this is the creme of the pull imho
I only ran two loads as shown below and I did not push them for a second run as normally I do not like the quality once it is beaten this far into submission lol.. This is when you find the contaminants and wind up with smoldering hash. None of mine including the 25 mic will smolder, it bubbles and melts every time. Great for spiking bowls and joints but I tend not to smoke it solo too much due to my own love and preference for the whole plant effect verses extracts.. Best of both worlds once twisted up or blended together in a pipe.. But once in a while I will smoke the pure stuff just to enjoy and share the effects of the limited plant compounds. The plant holds more cannaibinoids inwards then most know and I suspect in time we will learn more about the inernature of its medicine found within flowers and leaves and even stems.. Smoked them too long ago to get high and the finest ones did the trick even though it was a woody like high.. The shit kids do and adults as well when the drought of the 80's and 90's came around during those hot summers here in the states...
Both Indica extract to the right side and in the left is a sat run just extracted and pressed. I think it will all add up to be about 3/4 of an ounce when all said and dry.. Give or take a gram hehe ( I toked on a lil.)