Brazing Holes In Sheet Metal

Using lineman s pliers the plug is cut to shape slowly snipping into a circle.

Brazing holes in sheet metal. Steps use the wire brush or emery cloth to scuff the surface of the metal. For thicker sheet metal an old copper penny might be a quick source of material. Regardless of the reason you will have holes that need welded shut. Brazed metal can also be stronger then welds.

A third method of applying brazing filler metal is to use a paste mixture of flux and filler metal powder. 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. 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. And for personal projects and small production runs brazing is much more cost effective.

Holes in thin metal can be filled with plugs. A convenient method of preplacing filler metal is by using a brazing sheet an aluminum alloy base metal coated on one or both sides. Position the metal as desired. The equipment in this project can be bought for as little as 30 dollars.

Brazing is also much easier then welding it s a lot like using a glue gun. Heat treatable or core alloys composed mainly of manganese or magnesium are also used. In most cases an overlapped joint will be stronger and braze together easier than a. Brazing is a quick and inexpensive alternative to welding.

This may be due to burning through the thin sheet metal welding molding holes fabrication or other reasons needed. Then clean the surfaces using soapy water or a. The kind of plug to use depends on how the thin metal is being used. 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.

Perhaps a simple rivet or sheet metal screw can be secured in the hole.