Brazing Holes In Sheet Metal

Heat the joint where the two pieces of metal will meet.

Brazing holes in sheet metal.

The kind of plug to use depends on how the thin metal is being used. Holes in thin metal can be filled with plugs. Brazing is a technique for joining pieces of metal together by filling the join between the two metal pieces with a molten intermediary metal. For thicker sheet metal an old copper penny might be a quick source of material.

Brazing is a quick and inexpensive alternative to welding. Regardless of the reason you will have holes that need welded shut. Steps use the wire brush or emery cloth to scuff the surface of the metal. Perhaps a simple rivet or sheet metal screw can be secured in the hole.

Using lineman s pliers the plug is cut to shape slowly snipping into a circle. This may be due to burning through the thin sheet metal welding molding holes fabrication or other reasons needed. The equipment in this project can be bought for as little as 30 dollars. Then clean the surfaces using soapy water or a.

Position the metal as desired. In most cases an overlapped joint will be stronger and braze together easier than a. If you are going to weld on thin sheet metal such as car body parts then you re going to have holes to weld from time to time. Heat treatable or core alloys composed mainly of manganese or magnesium are also used.

A filler for the holes is needed i used some soft copper from a pipe hanging fixture hammered flat it was a perfect thickness for this application. Brazed metal can also be stronger then welds. Brazing is distinguished from welding because it uses an intermediary material usually a copper zinc alloy to join the two metal pieces rather than melting the pieces. If the hole needs to contain a liquid a rubber washer can go on the sheet metal screw to render it water tight.

A third method of applying brazing filler metal is to use a paste mixture of flux and filler metal powder.