very simple..
dissolve BHO in everclear. 5:1 or so
set in freezer for 24 hours.
pour into unbleached coffee filter, and let it drain IN the freezer, keeping it cold.
pour into my stainless steel dish and set on griddle at 110F with fan blowing on it for 6 hours.
scrape it, drip it onto parchment paper and into the vac chamber at 100F or so for a few more hours, and then shes done!
although its shatter, its still a liquid... at first there will be trapped air bubbles, but over a period of 3 or 4 days the bubbles slowly rise to the top and disappear, turning it into perfect shatter with no bubbles or anything.
I think the most important part is keeping it frozen while you drain it, dont let it heat up. and vac purging it to remove the final everclear... otherwise it takes forever.