I have a question regarding soldering. I've been taught when soldering hollow forms you should always have a hole in your piece to let the heat escape.
Its not the heat that is the problem, but the moisture. It is the
same as trying to pour a billet in a mold. If you don’t drive off
the moisture first, the resulting steam will blow the pour, or the
piece apart. The hole prevents a build up of pressure when the heat
is applied. I have seen hoop earrings explode when heated. It is
always a good idea to wear eye protection when soldering in case
this happens. If a piece of 14K at melting point hits you in the
forehead, it hurts like hell, but it will heal, If it hits you in
the eye, your sight may be gone. One close call was enough for me.
Wear eye protection.
Don