same method ive been doing for about 15 years now. since I was 15 lol. makes perfect clear glass shatter every time.
colibri butane blasted into a SS dish then evaporated to atmosphere and vacuum chamber for 36 hours.
2" glass tube extractor. 16" long. normally holds 4 oz of chopped AAA bud. normally do 2-3 cans of butane through it.
everything frozen in deep freeze. bud, butane, material. wear thick leather gloves.
blast into SS dish (most use glass. im stuck on ss and have been for almost 2 decades)
when done blasting, evap butane in double boiler of water, never go above 100F. aka warm water. not hot.
evap all the butane. DO THIS AND THE BLASTING OUTDOORS. NO IFS, ANDS, OR BUTS.
scrape the sticky oil out of dish with a flat blade and a pair of forceps.
scrape from blade onto parchment paper.
into vacuum chamber. once again, not above 100f. for 24-36 hours.
I flip it a few times throughout the process.
basically done after that.
even with the vacuum chamber I was getting solid glass almost every time (depending if starting material was decent). so with this vacuum chamber it just makes everything even easier (lower temps).
ill post some pics. I got all my supplies back from a buddy tonight since I got out of the BHO game for about 2 years. back in it now!
much rather do BHO than bubble hash. I suck at bubble hash and also dont like it.... never tried with fresh frozen though. I imagine thats a game changer.