Alternate Names: Fusion Frit FZ16
This analysis was confirmed with Fusion Dec 2017. They describe it as "used for textured glazes. Very high in boron and zinc.". But that description does not do this justice. No other frit we have ever used, even pure lead bisilicate, melts as well and to the brilliant surface that this does. This is an example of how much sense it makes to use a fritted form of a flux like zinc rather than the pure oxide material. Pure zinc oxide cannot produce the brilliant surface that this can. And it is fairly easy to do calculations (e.g. in your insight-live.com account) to substitute zinc in many existing boron fluxed recipes.
This is an example of a material that should be more commonly available than it is. There are equivalents from other manufacturers, but these likewise, are hard to get for small users. Volume users buy this by the pallet for their production, it's high cost amortizes down well considering the benefit it brings. A typical potter would be aghast at the price. Until he saw what this can do!
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.
These were 10g balls melted using our GBMF test. Frit 3602 is lead bisilicate. But it got "smoked" by the Fusion FZ-16 high-zinc, high-boron zero-alumina! Maybe you always thought lead was the best melter. That it produced the most transparent, crystal clear glass. But that is not what we see here. See something else? Each frit has a melt-fingerprint. Two are similar, it is immediately evident which.
This melt flow tester demonstrates the beautiful crystal-clear glass this zinc frit creates by 1700F. It fits this porcelain without crazing, even though very thick and high in sodium (the high zinc and boron are countering it to keep the thermal expansion down). It runs off the end of the runway around 1600F on this GLFL test, rivaling lead bisilicate. This is a more concentrated boron source than even Gerstley Borate. Everything about this material screams “ultra gloss”, what a material to build a fluid-melt reactive super-glaze on!
|Materials||Hommel Frit 446|
|Materials||Hommel Frit 840|
|Materials||Pemco Frit P-1733|
|Materials||General Frit GF-110|
|Materials||Ferro Frit 3824|
|Suppliers||Fusion Ceramics Inc|
|Co-efficient of Linear Expansion||7.90|
|Frit Softening Point||1450F|