Take two copper wires and
solder their ends on one side. Next, take an aluminium sheet and fix
it for performing the cleaning process. Now I have cleaned two areas, A and B So starting with B, where I am going to
apply the normal flux step, 1 put some solder on area B. After that, take the red wire and try
to shoulder it on that area using your hot soldiering iron. Now if I try to remove, you can see
that it easily came out. Now for area A, I have my own solution. So let's supply it and leave it for five
seconds. After that, take your hot soldering
iron and put some solder on area A, exactly as shown. And once the solder is stuck, bring
your red wire and try and solder it to the point A, you see, it is quite strong Now, if I do the continuity check on
this joint, you can see that it is quite good. Now, the solution that I've used is
potassium hydroxide. And I got this idea because I have been
working on the aluminium air batteries for a few weeks. Also, the joint is not exceptionally
strong, but it is comparatively much better. And if you can find the proper
concentration of KOH to add to the aquar solution and then apply it in the
perfect quantity. Then I think it will work even better.
