Cone 5-6 OXIDATION BASE GLAZE (v.3.2003) by David Pier

[Andy Clift]

Description: Transparent cone 5-6 glaze for rare earth elements.

Color: clear base

Cone: 5-6

Oxidation or Reduction: Oxidation/Reduction

Ingredients:
Ferro Frit FB-284-M _____22.8
Ferro Frit 3110__________5
Low Iron Spodumene_____12.7
Barium Carbonate_______14.5
Zinc Oxide______________2
6 Tile Kaolin____________13.5
325 mesh Silica_________27.5
Zircopax________________0.8
Veegum-T______________1.4
---
100%
Copper Carbonate________0.02
CMC gum_______________0.40

For PIER'S PURE LUX-DELUX PINK LEMONADE Add:
Erbium Oxide 8.0

For PIER'S PURE LUX-DELUX LIME CANDY Add:
Praseodymium Oxide 7.0

For PIER'S PURE LUX-DELUX GRAPE CANDY Add:
Neodymium Oxide 5.5
Additional 6 Tile Kaolin 1.0

Recommended specific gravity for Pink Lemonade: 1.55 g/ml
Recommended specific gravity for Lime and Grape: 1.50 g/ml

Application: sprayed, dipped, two coats

Additional Info: Source: Rare Earth
Elements Article

I have used this base for several colors for my work. Very nice! See article for notes for success.

[glassbymelissa]

thanks! I will let you know how it works out!

[ypbranch]

Guess as a functional glaze this one is an outside only, NO food surface or food contact?

[Andy Clift]

I did not use this glaze for functionally purposes but the glaze creator who is extremely thorough and knowledgeable, claims it is food safe in his article this is a direct quote.

The barium content of these glazes is high for two reasons. (1) Barium has a positive effect on the solubility(=transparency) of the lanthanides in the glass. (2) Barium gives glossier, more lustrous glazes due to its high index of refraction. I have subjected these glazes to strong acid and base conditions far in excess of any the glaze would normally encounter, and there was no measurable leaching. These glazes are safe if mixed properly and fired to maturity.