When we are talking about porosity, what exactly are we talking
Are we talking about something detected with magnification or what
I have known as problematic porosity, where the metal surface has
pits, voids, or will not take a high polish because it has an area
that is a sponge-like and can be seen by the naked eye and has to be
welded or remade?
The method for casting gold I use produces pieces that show no signs
of porosity with the naked eye.
I have alloyed my own deox silver, and sterling, and cast
200,000-300 000 thousand pieces that had no visible signs, with the
naked eye, of porosity. Yea, I use acetylene to cast with!
Torch melt, centrifugal, by guess and by golly.
The biggest problem I ever had was using pure silver that was
recovered from photographic film. It was contaminated with something
that gave me one whole casting 9-3 x 7 flasks with at least 75
pieces in each can that was so brittle that you could break it like
Take chances, make mistakes, play, try not to hurt yourself,
experiment, learn. Try doing things that "they" say you can't do.
Then you can do things "they" can't.
OCD and persistence helps.
I once repaired a pre-Columbian gold bat. When I repaired it, it had
broken, because of porosity when it was cast.
Point being, in the past there was not the technology to support the
standard that we feel we have to live up to now. There were not
loupes, there were not microscopes, there were not laser welders.
When I first started out, I made some things that I would be proud
of, and I made some stuff that I would be embarrassed by. And someone
eventually bought something, that had porosity or fire scale and
loved it and wore, and no one died or got sued.
Saw that customer again, and they never complained about the
workmanship, they bought more stuff, and sent their fiends. I am not
going to hell for not being able to achieve technical perfection with
each and every piece.
It is good to strive for perfection, and it is good to know when to
settle for lower standards when you know that your customer is
getting a perfectly fine piece.
I have had pieces come back that had cold solder joints. Not many,