Soldering is done with a zinc based alloy in either stick or powder form.
How to solder zinc sheet metal.
This how to video details the method of touch up and repair using zinc based solder.
Feel free to ask me any questions you have in the comments.
Learn the basics of soldering two pieces of metal together.
Any advise of soldering copper sheets to stainless steel sheets.
Here is a helpful video giving you a quick rough how to on solder grinding fluxing zinc.
Our plan is to clean the copper roof panels and the solder the stainless steel sheets to the copper then build the hip vent off of that.
What flux should be used.