1. use a gallon total per half pound(quarter kilo...there close) of bark.  most teks will say to use a gallon 4 a lb but that/s not enuf water swim thinks.

3. swim says covered

4. cotton balls may work swim never tried but a clean white cotton t-shirt works great.  U can squeeze the juice outa the bark w/o it ripping.  Dont c how u can squeeze juice out with anything else.  a following coffee filter filter is great too...let it decant a while before filtering...a lot of bark will settle to the bottom. 

6. i'd say 130 F.  Dmt freebase starts to melt at that swim believes.

8. most evaporate the naptha to a 1/3 or half of it's initial volume before putting it in the freezer.  This saturates the solution more.