fishtaco said:
Look up Silverfox on youtube,he only pours a few 1-2oz bars from scrap and they have no swirls.
Mind you he puts a "lot" of time and effort into finishing his bars which still look home poured but the reason I dont mind the premium on a few purchases!
I've seen his videos, and yes, he does put a lot of work into polishing his bars. (I think he does get swirls, but sands them off) But he needs to polish his bars because his metal is not very high purity. He claims it was assayed at .999, but I think that's optimistic. (Though his later efforts do look to be much better quality)
He only does the first step of refining, which despite the effort he puts into washing the result, won't be much better than 99%. (According to what I've seen and read, and from my personal experience) In my process, I follow that up with two electrorefining steps, and the result should be more like 99.99%.
Sreeips on youtube also double electrorefines and gets a perfect result, straight out of the mold. Check out his work here:-
[youtube]http://www.youtube.com/watch?v=umg3WSdPWHY[/youtube]
That's the quality that I'm aiming for...