ISO Oil

[Coelho]

after that could water be added to it to make it more pliable? or something else? I know some people keep theirs mushy when they make it so it is easier to get a piece off of it. Is this safe to do? It would still have some ISO in it right? Or would that bit left over be the water that is in with it?

Well... water does not mix with the oil. So, adding water would have no effect on the consistency of it.

Could I use 91% ISO so that the last bit to evaporate would be water? Or would there be more impurities than just the water left over also?

I dont know if there would be more impurities besides water. It depends on the brand of the iso you got. Anyway, as Italiano715 said, i think you should have no problems using it.

Also BHO is usually kinda goopie. Should you get that bone dry before smoking also? Seems like everyone tends to keep it soft and sticky.

Well... pure (chemically purified) cannabis oil is actually an oil. But most impurities make it harder and thicker, so when its impure enough it gets solid.

As BHO is the purest extracted oil one can get from weed (cause butane extracts less "garbage" than other solvents), it is more oily and less solid than the cannabis oil extracted with other solvents (which is called hash oil).

So, the "bone dry" appearance only applies to impure hash oil, the one extracted with other solvents than butane and the one that can actually get solid after all the solvent is evaporated. Depending on the solvent you use and the quality of the weed, it may never get dry enough, even after all the solvent has been evaporated.