If you are burning through the metal you re not moving the torch fast enough and or your welder is set too high.
How to weld sheet metal with a torch.
These are all little areas of welding a panel or sheet metal that you have to think about.
Gas welding joins metal using the heat of a torch burning both oxygen and a secondary fuel.
Propane can do the same thing although it is a much more.
But now i use henrob dhc 2000.
Practice welding on pieces of scrap metal that are close to the same size as the material you will eventually weld.
If you do not weld often or are concerned with the environmental impact of your practice propane torches can serve you well as they are inexpensive clean burning and recyclable.
A propane torch makes welding safe simple and efficient.
In order to weld sheet metal or patch panel you have to follow certain rules and use specific techniques.
The bulge can then be tapped down flat with a hammer and dolly to thicken the metal in that spot.
Using a thinner wire 0 30 instead of 0 35 will also help.
It s a great torch.
A filler rod is usually blended into the weld for strength.
I used to have a smith torch but i ended up buying an airco.
Oxy fuel welding torches.
For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping.
The main reason to use a smaller diameter wire is that it takes less heat for melting and hence the metal around the weld is not heated to a very great extent.
Practice also on different sized pieces in order to get the idea of how to move the torch and at what angles you can hold it.
Sheet metal welding techniques.
This takes away some of the stretch.
Move the torch faster and or reduce the amp setting of the welder and the lower the wire speed.
Also it will ensure that you don t get any warping of the materials you are working on and no burn through as well.
Problems with welding sheet metal.