Weld 20 Gauge Sheet Metal

If the parts fail to touch each other for even 1 16 inch you have created a hole that invites burn through and a gap that can t absorb the heat.

Weld 20 gauge sheet metal.

Welding thin metal demands tight fit up. Holding the tip too far from the surface will cause the wire to have to come out too far to touch the metal. Mig welding for thin metal. Sheet metal has usage in sectors like making automobiles airplane wings and fuselages roofing and medicinal tables.

Mig is one of the best ways to weld 20 gauge sheet metal. Mig welding is the preferred method for most automotive bodywork and since sheet metal is the thinnest of metals a large expensive mig unit is usually not required. To avoid rework follow the measure twice cut once rule. In a situation when a welder needs to make a butt weld on a 20 gauge panel and the parts are not able to touch each other not even for even 1 16 inches you will create a gap that is not capable of being absorbed by the heat.

For thinner gauge sheet metal like 18 or 20 gauge we suggest 023 6mm wire in your mig welder. Keep the stick out short stickout of your mig wire is important when welding any type of metal but especially sheet metal. In the us sheet metal is designated through the gauge the larger the number the thinner the metal. Imagine a butt weld on 20 to 24 gauge metal.

Fit up and joint design. The majority of the sheet metal welding i ve done was with a 90 amp 110 volt welder. Typically the gauges run from 7 to 30 gauge.