I'd like to add to mudassir's questions and ask: How long after diluting an oil in alcohol can one reasonably assume it's "fully diluted."
What I mean is, I'm going to dilute all of my essential oils in alcohol prior to mixing them. Can I just add some essential oil to alchol at say, 20% dilution, and then use that in a blend a minute later, or won't it be fully and evenly diluted in the alcohol by that point. I'm worried that if it's not, I may end up getting a drop that is at say, 50% dilution since it hasn't fully diffused yet.
So, how long should one wait? And also, as mudassir asked, is heat or stirring needed? If they aren't needed, do they at least help speed up the diffusion process?
Oh, and to answer one of your questions, I'd just use Everclear as your source of alcohol while you are still experimenting, mudassir. It's cheap and readily available. I've heard conflicting reports if it is actually legal to use if you are going to sell a product, but you could always switch over to perfumer's alcohol at that point in the future. That's my plan, anyhow.