As related to your first post, I would agree with Warren (maybe it is a Carolina thing). Starting with a 36mg would probably be the safest route for getting your feet wet (not literally of course) with mixing and techniques for someone that has a history of nic exposure. But, please, still be careful of small drips and splatters that a non-nic may potentially contact. I have four "counter-surfer" cats so I mix in the garage. I still am always worried that my grandchildren, a stray pet, squirrel or raccoon may get exposed-so I am very careful - especially with cleanup.
@MostlyClassics, funny that I had been DIMing (Do It Myselfing) for quite some time and found this particular "cutting" suggestion on these forums about a year ago- was really a "duh" moment for me, especially since I use 500mg. It definitely cuts the risks.
To those new to the forums, keep coming back, there is always something to learn here.