137 How to Solder a Copper Seam with Super Alloy 1
For this video demonstration we created a joint with two thin pieces of copper, then joined the parts to make a seam, and soldered the joint with Super Alloy 1.
We used a propane torch for this application; however, Super Alloy 1 can be applied using almost any heat source: propane, butane, heat gun, soldering iron, oxyacetylene and more. Super Alloy 1’s low 350°F working temperature ensures an even flow regardless of torch.
First, secure the parent metal to be joined. Heat Freeze Heat Paste can be helpful for this task, or the parts can be secured with a vice if necessary.
After securing the part and pre-cleaning the parent metal to ensure proper bonding, dip the rod into the flux and apply the flux to the work area. Gently and broadly pre-heat the parts evenly with the torch to gradually bring the metals up to 350°F. No need to worry, Super Alloy 1’s honey colored flux is specially designed to transform from honey colored to root beer brown when the parent metal reaches 350°F, acting as a visual temperature guide and preventing overheating the parent metal.
When the flux changes color, add a drop of the rod to bond the joint, then apply more flux and rod to fill the seam. If cosmetics are a concern and you wish to hide the seam, simply add more flux and flow the solder until it flattens out.
Notice the seam, sealed front to back (30,000 psi). Allow the part to cool naturally, then remove excess flux with a wire brush and warm water.
Super Alloy 1 can be used to solder many metals–individually or in any combination: copper, Zamak, aluminum, brass, pot metal, bronze, copper, zinc die cast, steel, pewter, and spelter.