As a potter, I've concentrated primarily on Raku... but I do dabble in cone-6 work. Aside from cranking out the odd mug or two, I sometimes make cone six base vessels for my Raku fountains.
I'd like to enhance my surfaces... with a particular desire to render things as organic and complex in appearance as possible.
When you start thinking about organic, complex surfaces, it's impossible to avoid Steven Hill's influence. I've been devouring his DVD of late...
However, I was pretty heavily influenced early on by Hesselberth and Roy's 'Mastering Cone Six Glazes'. The idea that functional ware needed to be tested for leaching, durabilty, fit, etc. kind of burned itself onto my cortex.
When I look at the kind of glaze overlay that Steven Hill does... I have to believe that it would be impossible to really evaluate all the combinations for these important characteristics. My impression is that two (or more) glazes can sometimes act in a manner that's not predicatable based on the individual glazes. So... what's the approach? Do you just use a robust base glaze and hope for the best? Do you not worry as long as glazes are in a place that doesn't contact food?
Or am I being too paranoid?