when using food grade vegteable glycerin to make tinc can u put it in a crock pot on a warm setting in a jar to extract the thc or would not work or if it gets to hot can u evaporate the thc i have been told glycerin tinc takes up to 60 days to make keeping it the dark rolling it around once a day i do not use any type of alchol do not like it is their a way to speed up the process very ashmatic can not smoke very impatient waiting on tinc or can some one give me a good site to check out and a walk through process thanks AMATUER101