Weller W100PG Soldering Iron replacment tips and tip temperature information
600°F Tips - Ideal for working with lead came as lead melts at approximately 630°F.
700°F Tips - Standard tip temperature, with a little skill can be used on both copper foil and lead came.
800° F Tips - Ideal for copper foil work. Use of this temperature allows you to make fast quality connections without the danger of leaving uneven layers in the seam. It also has the advantage of adding strength by allowing the solder to run right through the seam.