Ummm, the DIY section might be more appropriate. You do know that pure nicotine can be extremely toxic right? like a drop on exposed skin will kill you almost immediately and there is no treatment for nicotine poisoning.
dang, I can't remember where it is that those guys hang out. I was browsing there some time ago and can't find it now. They're all making their own
juice and get liquid nicotine in various strengths. Lots of information on sources, care and handling.