As I understand it, admittedly being a rank newbie at this DIY stuff, and having read quite a bit here, the way to do this is to get unflavored in the strength desired and mix in the flavor to suitable proportions.
Adding VG and / or PG to an existing flavor will dilute the flavor and decrease the strength (there are spreadsheets somewhere on the forum that will calculate this for you (work just fine in OpenOffice too).
Took me a while to get that straight and the answer seems to be to get unflavored in whatever strength you desire and mix in your flavor of choice until you get what is good to you. I think you can also get different strengths of a particular flavor and mix those together to get various strengths and maintain the flavor (get 36mg and 0mg in a particular flavor and generate more of whatever strength you desire).
For those of us who do like tobacco flavors, I am not sure what the answer is as I have found no tobacco flavor for mixing.
What I am doing at the moment is trying out the Snus method of extraction using PG. I will say that so far I have not reached a suitable level of flavor as yet (OK, but not great). My last attempt was 2 Snus packs in ~1 oz of PG. The flavor is better this time but I am finding that I personally do not care for PG, it seems (to me) to have an underlying, as best I can describe it, slight metalic taste and vape isn't anything to write home about.
I am going to try it again with 3 Snus packs and using VG rather than PG and see what happens. Not in a rush here so I'll let it have at for a LOT longer than the 2 hour soak the original method called for. Not sure how it will turn out at this point but have no idea how else to find out
. I may have to soak the Snus packets in some vodka and then mix that in with the VG, really do not know at this point. From what I have read on the forums and assuming a 100% extraction of the nicotine that would give me ~1 oz (30mL?) of 18mg tobacco flavored juice, but I suspect the 18mg figure is probably wildly optimistic.
Qualifying this by saying that I am on day two of DIYing having finally accumulated most of the supplies to do so
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Also, as a last thought, the idea put forth by Walrus (IIRC) is to get 36mg unflavored and either use it as it is by just adding flavor (will decrease strength to some ?smallish? degree) or mix PG and / or VG in to decrease strength which does stretch it depending on how much you dilute (I generally go for 18mg at this point) and make it much less expensive (30mL of 36 diluted to 18mg gives you 60mL of 18mG and more the further you dilute the strength).
At least I have finally gotten my head around vaping something other than tobacco flavors
. My DIY supplies have turned into a pile of stuff. PG and VG (need to start getting it in more than 4 oz size
) and a pile of flavors: Bubble Gum, Orange Cream, Key Lime, Cheesecake, Strawberry and root beer from Lorann's and Cherry, Vanilla, Passion Fruit and Banana from Zenith's edible flavors collection. Not to mention
, piles of bottles, shot glasses for mixing, various size calibrated (and not) droppers, paper towels, smallish funnels and God only knows what else I might have missed listing
. Turned my electronics / computer repair / mod workbench into a chem lab
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My experiment with the orange creme and VG last night is stellar! More and better to follow
!
Hope this helps and anyone please feel free to jump in and correct anything I may be off base about.