Have you ever had an aluminum window frame crack and you tried welding it back together only to end up having a deformed, unattractive surface? If what you wanted is a smooth and even finish, as if the crack was never there, then you should do brazing instead of welding.
Brazing is a process that uses a brazing rod to join two metals together. The brazing rod when heated becomes a sealant that flows across the joints and upon cooling forms a strong, solid bond. The finish makes a resilient and invisible bond that can withstand twisting and jolting movements.
Before applying the braze rod, make sure that you thoroughly clean the joint surface with a metal brush to remove all traces of oxidation. Brazing can create a watertight and airtight bond, making the seams look flawless and almost invisible. Watch the video to learn more about basic metal brazing.
Move on to the Next Page video: How To Easily Join Together Aluminum Plates & Repair Aluminum Parts.