We must remember that originally fentanyls where created to save lives and are still used in many types of operation and as a pain killer for people with terminal cancer.
Also, I agreed making in clan labs is quite dangerous even for experienced chemists and some have been found dead by familly members. SWIM has made it several times and twice OD'd, but was lucky because SWIM was not working alone and had naxalone on had.
I don't really want to encourage its synthesis either, but if you are really interested in it there are two good patents out there that explain in detail how to do it. Just a note, when working with high concentrations of basic solutions and heat, make sure you use appropriate equipment because it will chew through glass. Also, the most important thing, even if you or your friends have made several synthesis in the past, please find someone with prior fentanyl synthesis experience to guide you through it.
LD50 = 2mg and this stuff sticks to outter walls of glassware, your clothes, floats in the airs... you can easily expose yourself to small quantities even when you are outside your lab. Its not just making it, but having Good Working Procedures - GWPs (to make it safely).
Final note: knowledge is niether Good nor Evil, it's how we use it. And, if anyone is to go down that road, even after saying how dangerous it is to work with, the worse we can do is nothing and hence we should (as a community) at least give them direction so nobody gets hurt in the process.