[Beginners' Corner] Soldering gold

hi I am not a goldsmith but am interested in gold and all the
related on how to work with it I have welded braised
soldered common metals I have tried to work with gold and failed with
flying colors wanted to learn how to solder without melting the gold
I am trying to solder and how to build up gold on a existing piece
without melting it can you help me here?

I am not sure from your post which karat of gold you are working
from. I am self-taught and started out trying to solder 14k onto
sterling. The 14k has a much lower melting point and the results
were frustrating to say the least. 18k and silver solder together
better without the gold melting because the melting points are
similar.

J.S. Ellington