|Monthly Tech-Tip |
GA6-B (left) is our regular Alberta Slip honey glaze (20:80 Frit:Slip). But the G3903 (mislabelled L3903 here) uses Fusion Frit FZ16, the champion melter of all the frits we have tested. It produces a surface so brilliant it is hard to believe the frit is not leaded. And notice how it has eliminated the bubbling. The G3903 works well down to cone 4.
Fired at cone 6 using the C6DHSC schedule. On Plainsman M340 and Buffstone. Left: Alberta slip with 20% Ferro frit 3195 (GA6-B). Right: Alberta Slip with 20% Fusion Frit FZ-16 (G3903). This Fusion zinc frit is a super-melter, much better than 3195. A picture cannot do this glaze surface justice! The zinc brings out the red coloration much better. Frit FZ-16 is not readily available, we are hoping companies will eventually stock it. And it produces a more brilliant glassy surface that highlights thickness variations even better. Adding a little extra iron oxide (e.g. 1-2%) would make the effect even richer. One thing to keep in mind: These frits upset the development of rutile or floating blue effects.
Fusion Frit FZ-16
The champion in our frit melt-off competitition. This frit showcases the amazing fluxing power of boron and zinc working together. It is 15.5% ZnO.
GA6-B - Alberta Slip Cone 6 transparent honey glaze
An amber-colored glaze that produces a clean, micro-bubble-free transparent glass at cone 5-6. Works well on brown and red burning stonewares.