What's the fastest you'll cool glass?

[Sabrina]

1300 sounds a little high for enamels. Is that the recommended temp? Maybe they are lead free? What brand?

Thanks for your thorough response, Joseph! Quite helpful.

To answer your question, the enamels in question are Fusemaster high-fire opaques. I used to only prefire them to 1100, as I would do with glass stainers colors and low-fire enamels, but at that temp they're not fully baked and when capped and fused the images smear.