Hello I am new to this forum. And looking for someone help. I have just started vaping about a year ago and have no interest in going back to the old days. My first purchase was a Kanger top box mini. During the course of the first 3 months of use it it was ok. I was introduced to building my own coils and then shortly switch to an RDA. Currently using a twisted messes 2 and love it.. what I would like to know is building A RDA or RTA for temperature control.. temperature control was one feature I loved about the Kanger. The problem with it was the coils I could buy package of coils and only 2 or 3 out of 5 would work properly. So I would like to build my own any information or links on how to it is it safe or not thank you