Bunny,
How did you filter your VG extract? I ask not to criticize, but simply out of curiosity, since coil-crusting and wick-gunking are inevitable with NETs, and we're all learning how to minimize them or at least slow down the negative effects of such built-up crud. The higher-tech extraction methods (steam and CO2) are apparently "cleaner," but few home extractors could afford that kind of equipment. For the vast majority of us, simple-soak macerations are the extraction method of choice, but the very nature of that process causes the unavoidable breakup of
tobacco cellulose into tiny particulates that end up suspended in the solvent.
Removal of particulates after the maceration steep becomes significant, and the main reason for filtering. With its thicker viscosity, 100% VG is obviously more challenging than PG or other, thinner solvents to typical home-based filtering procedures (i.e., gravity-based passage
through coffee filters or cotton-stuffed plunger syringes).
I've concluded that 100% VG macerations essentially demand laboratory-type forced filtering, typically with vacuum pumps, Erlenmeyer flasks, Buchner funnels, and lab-quality filter paper. Even then, multiple passes may be necessary
through progressively finer-pore filters.