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basic steps
I'll keep this brief but I want to stress something I do keep mentioning:
You really need to be able to make a good clear formula before you can expect to make a good color formula.
Using SP color base is not a panacea for a color formula. Croucher I think ran nine bases, I ran five or six and each was engineered for the colors and additives going into the goop.
The formula listed recently of mine was a glass I derived back around 1976. I messed with that basic stuff over a number of years but finally set it aside for better glass. It really wasn't until I wrote formulas for Spruce Pine about four years back that I came to glasses I really feel settled with. So keep in mind, neither calcium or sodium are your friends, they're just cheap. Fortunately they are all quite replacable.
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Where are we going and why am I in this basket?
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