The filler will liquify and mix in with the two copper helping the metals weld together.
How to weld copper sheet.
Buy the right copper.
152 4 to 304 8 mm away from the weld.
Add filler into the puddle.
Some grades of copper have oxygen.
If you are tig welding copper buy oxygen free copper.
As soon as the puddle has appeared gently apply a small amount of filler through the arc to weld the metals together.
It is often necessary to raise the temperature level of the sheet in an area of 6 0 to 12 0 in.
The weld should be started at some point away from the end of the joint and welded back to the end with filler metal being added.
The most common type of welding for copper is the manual metal arc process but gas metal arc and gas tungsten arc are also used.
You should also know when not to weld copper because soldering or brazing are often better methods depending on the type and use of the copper.
How to tig weld copper.