Braze
In short
Brazing is a metal-joining technique that uses a filler metal with a lower melting point than the parts being joined. The liquid filler flows into the gap between the pieces through capillary action to create a strong bond.
In plain words
You heat two metal pieces and melt a special metal glue between them. This glue flows into the tiny spaces and hardens to hold the parts together. The main pieces do not melt during this process.
A simple example
A plumber might use brazing to join copper pipes together. They heat the joint and apply a filler rod that melts into the connection to prevent leaks.
Why it matters
It allows for joining different types of metals that might not weld easily. It also creates strong, leak-proof joints in complex machinery and plumbing.
Easy to mix up
It is often confused with soldering, which uses an even lower temperature filler metal.