I briefly read the tek and can see what you mean about safety. However, naphta is still a great flame hazard and should be watched out for. Never tried limonene before so no idea. Sounds like a shit hot simple tek!
true on the naptha though honestly i do it in my kitchen not far from a gas fireplace thats always on lol, im using so little at a time in this tek that i could lite my bowl on fire and it wouldnt do anything to special lol. but for sure its best to do it outside and far away from a flame i dont condone my recklessness just cause im comfortable. i dont use more then 100ml at a time, but im not doing huge extractions either, after my first pull i just add 60-75 each after
