Encyclopedia & FAQ's

DIY Frequently Asked Questions / How close to the copper fitting do you need to hold the flame to get bring it up to soldering temperature?

The inner blue cone within the flame is the hottest part of the flame and should always touch the copper. When the copper starts to turn iridescent in color and gets a shiny appearance, gently touch the tip of the solder to the joint. I should melt and run into the joint.