About this Event
Advanced Glazing: Mid-fire Macrocrystalline Glazes
Sessions: Tuesday, July 2 @ 6:30 and Tuesday, July 23 @ 6:30 (**must attend both**)
Looking for a way to stretch your glazing vocabulary? How about with more...science! In this pair of classes students will learn how to make, use, and fire a class of specialty glazes that produce visible crystal growth in the matrix of the fired glaze. These glazes are known for their difficulty in producing consistent, reliable results, but when the construction, chemistry and heatwork process all come together, grooviness ensues.
These glazes are very different than standard, commercial glazes and there are many additional steps necessary to successfully fire them, but understanding the process and chemistry behind them can help to better understand what is happening with your current glazes.
Students must attend both sessions of the class to be able to use these glazes and to participate in the specialty group firing that we will do. These glazes *will not work* in our standard community firing. The first class will cover the production of pieces suitable for macrocrystalline glazing and how to construct the safety stand. Three weeks later (allowing time for pieces to be made and bisqued), the second class will cover the science behind the glazes and how understanding that will help you achieve the final result. You will learn how to prep the glaze and apply it to your work. We will also verbally cover kiln firing schedules (more science, yay!) and, if you are interested, you are more than welcome to come to the load in and unloading of the kiln.
How to prepare the surface of your ware to maximize/facilitate crystal growth and visibility (throwing and trimming finishes, engobes, etc.)
How to create specialty firing stands to protect your ware and the kiln from run off glaze
Understanding of the basic chemistry involved with this class of glazes and how that affects crystal shape, placement and color
How to prepare these glazes for application (choosing, modifying, physical preparation)
How to apply these glazes to your ware
Understanding of the firing cycles required to produce these effects
Prerequisite: Ceramics 100
Competency in ceramic construction. This class will not be teaching you how to make basic wares. These glazes are very runny and are not suitable for very small items. Hand built, slipcast and wheel thrown are possible, we will discuss some limitations and concerns regarding handbuilt and slipcast items. There will be an initial cap on size to ensure quick firing turnaround for all students.
We will discuss suitable clay body types in the first session but T-mix no grog/sand (available from Trinity) or porcelain are recommended.
There is a $10 fee for the class to cover the cost of the glazes. Any remaining glazes will be available to those that have taken the class and we will organize another group firing once we have a full kiln load.
If you have any questions, please feel free to send me a message on Talk @cmcooper0 or at the same id at gmail. If you are unable to attend for any reason, please cancel as soon as possible to free up a spot for another. Thanks!
Special Considerations and Warnings
Students will need to provide their own, appropriate bisqueware and firing stands. This will be covered in Session 1. No Firing Stand=No Fire.