DIY Bronze Welding

Clean the bronze item thoroughly with a solution of 1 teaspoon of dishwashing liquid in water to remove grease and oils. A clean surface will provide effective adherence of the materials. Metal cleaners can also be used for this purpose. These products are available at automotive or hardware stores.

Secure the two parts together carefully with C-clamps, matching edges in the case of broken parts.

Preheat the material with the torch just to the temperature where the metal begins to sweat. This process allows the metal itself to melt the filler material to form the joint. Apply the filler rod to the bronze, allowing the molten material to flow into the joint, and direct it with the tip of the rod. Use small increments of heat to raise the temperature of the material.

Direct the angle of the torch to push the filler into the joint recesses. Strive for a continuous weld across the surface to be joined.

Allow the weld filler to cool. Check for any gaps or voids.

Reheat the material carefully and give the joint a second weld pass, allowing the filler to melt into remaining voids. Avoid applying too much filler to the joint; this can cause cracking. Penetration should be superficial, simply allowing filler to melt into open spaces.

Allow the material to cool completely and clean the joint with a wire brush.