G2896
DraftDescription
Recipe G2896 is a Cone 6 iron-red glaze formulated with Ravenscrag Slip. The red coloration is derived from iron silicate crystal formation during firing. Technical properties and application guidelin
Original Author
Tony Hansen
Usage Instructions
Recipe G2896 is a Cone 6 iron-red glaze formulated with Ravenscrag Slip. The red coloration is derived from iron silicate crystal formation during firing. Technical properties and application guidelines are as follows: 1. Rheology: High iron content causes significant slurry gelling. Manage viscosity by adjusting water content to maintain fluidity, while monitoring for drying shrinkage and cracking. 2. Application: Requires a uniform, heavy application to facilitate crystal growth. Due to high melt fluidity, precise thickness control is required to mitigate running on vertical surfaces. 3. Formulation: The recipe utilizes a combination of frits (Frit 3249) to source boron and MgO, replacing previously used raw materials like Gerstley Borate and Ulexite to improve consistency. 4. Firing: The glaze is designed to develop iron-red color at Cone 6 without requiring specialized cooling curves. High loss-on-ignition (LOI) values may cause bubble formation during the melting phase; firing schedules should account for potential surface defects associated with gas evolution.