I have found that while I sing I don't stutter at all. This isn't useful though as I imagine not many of us would wish to sing our words in day-to-day conversations. I actually became an almost fluent speaker after 2 years of disciplined effort. I don't use any techniques when talking. I taught my brain how to talk without stuttering. If anyone is interested in how I managed to do that, DM me and I would love to help you! P.S. I did this quite young - I am 18M.