All I recently have been playing wit titanium wire and have run into a few issues. Prior to coil build, I visited Stem Engine website and grabbed their Ti wire file and loaded it into E-Scribe. I then wrapped a coil at 0.25 ohm coils and fired it at 400 degrees at 40 watts on a TFV4 RBA. It seemed fine for the first few fires on my Opus 200. I sat it down and picked it up later and fired mod. Flames began to shoot up the atty stack. This occurred twice and I have since given up on the Ti wire builds. Any ideas?