Basic Silver Soldering With Strong Joints: 8 Steps (with Pictures) Once everything is in position, you are ready to turn on the torch and apply heat. (I almost always have to dial the heat back on my Mapp gas torch. You will get a feel for how much is too much.) Start by moving the flame around the entire area, BROADLY sweeping in a circular motion.At this point, you want to heat the METAL, not the solder! Pay attention that you apply heat to BOTH pieces as evenly as possible. The flux will bubble, and the silver solder will look really shiny, and eventually melt.You want to watch that you don't make it bright orange. Once the silver flows into the joint, give it a couple extra seconds of heat and pull away.
Turn off your torch and let the piece sit, undisturbed, until it cools completely. Craft Home. FabLab@School - Digital Fabrication for Education. IKEA Hackers. 3D printing, laser cutting – design, make & build your own products with Ponoko.