I love the marbelling. So far your first attemps have been waaaay better than my many attemps. I use 4794 for votives because I like the low melt point. Have never used it for pillars, but I think I read that a few others have tried it with additives to raise the melt point. I am curious about how pillars will burn using this wax. What wick did you end up using? As for polycarb molds, I have used my heat gun on them, but with a gentle touch (not as heavily as with aluminium). They are getting a little cloudy, but still good to use.