Thanks for sharing, but I would not recommend using this type of soldering iron to do the job. Unless you're 100% sure, that You won't be touching - even by accident - other elements. It creates great interferences, and it's *not* recommend to solder any electronic with it.

Instead, You should use resistance-soldering-iron, something like this:
http://static.ddmcdn.com/gif/cold-heat-20.jpg
...or any other type (gas-powered, etc), which doesn't involve transformer inside.

Your mtype of soldering iron is heating very quickly, and good chocie for many other purposes, but *not* electronic, AFAIK.

/Estel