My bad, lgc spam liked me about 40 times. This got lost..
Qwet is alot like qwiso, my preferred method. Basically you want the ethanol as cold as possible, your freezer for a couple days is fine. Then determine if your doing a wet or dry extraction-is this fresh harvest or smokeable? If its wet you have to be more careful. If its dry grind it up, the less cuts the better the product. If its wet i would always use scissors, frozen scissors and cut while bud is still frozen. This takes time.
So you have your ground bud in the freezer, ethanol in the freezer. You only want bud in contact about a minute. Filter in stages. Fll a mason jar with material, replace inner lid with mesh screen to hold back most material. Then a coffee filter for the rest..pour etoh in the jar, swirl for a minute and pour through the filters.
You really want to use as little heat as possible in the evap process. Air blowing over is fine. If you do use heat really not over 110°
Purging isnt really that big of a deal, once it loses its creamy multicolored opaquness its good to go
If you want to do a second run you can but will get extract more suitable for eating, do the run at the same time...