soldering iron

This is the one I've used all over he world racing slotcars...more up front but u can adjust your heat, when u replace the tips and or have a verity to chose from there cheaper. You have to have a good to do it
http://www.homedepot.com/p/t/203525...ct-1-_-203834068-_-203525863-_-N#.UbEd8xmsNoQ