Brazing Holes In Sheet Metal

Using the same tools and techniques as sweat soldering copper pipe this is the best way i know of doing a permanent almost invisible repair to sheet metal.

Brazing holes in sheet metal.

For these types of holes i start by cleaning the area around the hole with an angle grinder and flap disc. Brazing means melting an alloy to join two metals. Brazing is similar to soldering but at higher temperatures. By comparison high temp soldering brazing is guaranteed to warp and buckle the metal.

Apply this paste to the areas on the metal pieces that will be joined using the brush. Wipe the areas on the metal pieces that will be joined with the emery cloth so the surfaces are free from dust and grease. Use the right brazing rod material for the metal used in your project. Brazing as we ve seen uses the principle of capillary action to distribute the molten filler metal between the surfaces of the base metals.

It brazes at low temperatures and makes it easy to connect all sorts of metals and the welds aren t brittle. There are a few different brazing systems out there. My favorite is low temperature brazing using an alloy called hts 735 ii. Have you ever welded something so thin and worn out that all you do is blow holes in it.

Therefore during the brazing process you should take care to maintain a clearance between the base metals to allow capillary action to work most effectively. The key tip is to make sure you take the time to setup your welder for nice flat spot welds and leave time for the metal to cool between each weld. The easiest holes to fill are small holes about the diameter of a pen or smaller. Brazing is the process of joining two independent pieces of metal to form one strong load bearing joint.